Documentation

Supports MATLAB Function Block: Yes

audioDeviceWriter

Audio System Toolbox

Supports MATLAB Function Block: Yes

audioDeviceWriter

DSP System Toolbox™

You must use the packNGo function to package the code generated from this System object™ and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

audioOscillator

Audio System Toolbox

Supports MATLAB Function Block: Yes

audioPluginInterface

Audio System Toolbox

Supports MATLAB Function Block: Yes

audioPluginParameter

Audio System Toolbox

Supports MATLAB Function Block: Yes

audioPlugin

Audio System Toolbox

Supports MATLAB Function Block: Yes

audioPluginSource

Audio System Toolbox

Supports MATLAB Function Block: Yes

axang2quat

Robotics System Toolbox

Supports MATLAB Function block: Yes

axang2rotm

Robotics System Toolbox

Supports MATLAB Function block: Yes

axang2tform

Robotics System Toolbox

Supports MATLAB Function block: Yes

az2broadside

Phased Array System Toolbox

Does not support variable-size inputs.

azel2phitheta

Phased Array System Toolbox

Does not support variable-size inputs.

azel2phithetapat

Phased Array System Toolbox

Does not support variable-size inputs.

azel2uv

Phased Array System Toolbox

Does not support variable-size inputs.

azel2uvpat

Phased Array System Toolbox

Does not support variable-size inputs.

azelaxes

Phased Array System Toolbox

Does not support variable-size inputs.

bandwidth

MATLAB

—

barthannwin

Signal Processing Toolbox™

Window length must be a constant. Expressions or variables are allowed if their values do not change.

bartlett

Signal Processing Toolbox

Window length must be a constant. Expressions or variables are allowed if their values do not change.

bboxOverlapRatio

Computer Vision System Toolbox

SupportsMATLAB Function block: No

bbox2points

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

bchgenpoly

Communications System Toolbox™

All inputs must be constants. Expressions or variables are allowed if their values do not change.

beat2range

Phased Array System Toolbox

Does not support variable-size inputs.

besselap

Signal Processing Toolbox

Filter order must be a constant. Expressions or variables are allowed if their values do not change.

besseli

MATLAB

If the order nu is less than 0, it must be an integer.
Always returns a complex result.

besselj

MATLAB

If the order nu is less than 0, it must be an integer.
Always returns a complex result.

beta

MATLAB

—

betacdf

Statistics and Machine Learning Toolbox™

—

betafit

Statistics and Machine Learning Toolbox

—

betainc

MATLAB

Always returns a complex result.

betaincinv

MATLAB

Always returns a complex result.

betainv

Statistics and Machine Learning Toolbox

—

betalike

Statistics and Machine Learning Toolbox

—

betaln

MATLAB

—

betapdf

Statistics and Machine Learning Toolbox

—

betarnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

betastat

Statistics and Machine Learning Toolbox

—

bi2de

Communications System Toolbox

—

billingsleyicm

Phased Array System Toolbox

Does not support variable-size inputs.

bin2dec

MATLAB

Does not support cell arrays.
Does not match MATLAB when the input is empty.

bin2gray

Communications System Toolbox

—

binocdf

Statistics and Machine Learning Toolbox

—

binoinv

Statistics and Machine Learning Toolbox

—

binopdf

Statistics and Machine Learning Toolbox

—

binornd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

binostat

Statistics and Machine Learning Toolbox

—

bitand

MATLAB

—

bitand

Fixed-Point Designer

Not supported for slope-bias scaled fi objects.

bitandreduce

Fixed-Point Designer

—

bitcmp

MATLAB

—

bitcmp

Fixed-Point Designer

—

bitconcat

Fixed-Point Designer

—

bitget

MATLAB

—

bitget

Fixed-Point Designer

—

bitor

MATLAB

—

bitor

Fixed-Point Designer

Not supported for slope-bias scaled fi objects.

bitorreduce

Fixed-Point Designer

—

bitreplicate

Fixed-Point Designer

—

bitrevorder

Signal Processing Toolbox

—

bitrol

Fixed-Point Designer

—

bitror

Fixed-Point Designer

—

bitset

MATLAB

—

bitset

Fixed-Point Designer

—

bitshift

MATLAB

—

bitshift

Fixed-Point Designer

—

bitsliceget

Fixed-Point Designer

—

bitsll

Fixed-Point Designer

Generated code may not handle out of range shifting.

bitsra

Fixed-Point Designer

Generated code may not handle out of range shifting.

bitsrl

Fixed-Point Designer

Generated code may not handle out of range shifting.

bitxor

MATLAB

—

bitxor

Fixed-Point Designer

Not supported for slope-bias scaled fi objects.

bitxorreduce

Fixed-Point Designer

—

blackman

Signal Processing Toolbox

Window length must be a constant. Expressions or variables are allowed if their values do not change.

blackmanharris

Signal Processing Toolbox

Window length must be a constant. Expressions or variables are allowed if their values do not change.

blanks

MATLAB

—

blkdiag

MATLAB

—

bohmanwin

Signal Processing Toolbox

Window length must be a constant. Expressions or variables are allowed if their values do not change.

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

boundarymask

Image Processing Toolbox

The conn argument must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function block support: Yes.

break

MATLAB

—

BRISKPoints Computer Vision System Toolbox Supports MATLAB Function block: No
To index locations with this object, use the syntax: points.Location(idx,:), for points object. See visionRecovertformCodeGeneration_kernel.m, which is used in the Introduction to Code Generation with Feature Matching and Registration example.

broadside2az

Phased Array System Toolbox

Does not support variable-size inputs.

bsxfun

MATLAB

buttap

Signal Processing Toolbox

Filter order must be a constant. Expressions or variables are allowed if their values do not change.

butter

Signal Processing Toolbox

Filter coefficients must be constants. Expressions or variables are allowed if their values do not change.

buttord

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

Cell Array Limitations for Code Generation

bwareaopen

Image Processing Toolbox

BW must be a 2-D binary image. N-D arrays are not supported. conn can only be one of the two-dimensional connectivities (4 or 8) or a 3-by-3 matrix. The 3-D connectivities (6, 18, and 26) are not supported. Matrices of size 3-by-3-by-...-by-3 are not supported. conn must be a compile-time constant.

MATLAB Function Block support: No.

bwboundaries

Image Processing Toolbox

The conn and options arguments must be compile-time constants and the return value A can only be a full matrix, not a sparse matrix.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: No.

bwconncomp

Image Processing Toolbox

The input image must be 2-D.

The conn argument must be a compile-time constant and the only connectivities supported are 4 or 8. You can specify connectivity as a 3-by-3 matrix, but it can only be [0 1 0;1 1 1;0 1 0] or ones(3).

The CC struct return value does not include the PixelIdxList field.

MATLAB Function Block support: No.

bwdist

Image Processing Toolbox

The method argument must be a compile-time constant. Input images must have fewer than 2³² pixels.

Generated code for this function uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

bweuler

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

bwlabel

Image Processing Toolbox

When generating code, the parameter n must be a compile-time constant.

MATLAB Function Block support: No.

bwlookup

Image Processing Toolbox

For best results, specify an input image of class logical.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

bwmorph

Image Processing Toolbox

The character vector specifying the operation must be a constant and, for best results, specify an input image of class logical.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: No.

bwpack

Image Processing Toolbox

Generated code for this function uses a precompiled platform-specific shared library.

MATLAB Function Block support: Yes.

bwperim

Image Processing Toolbox

Supports only 2-D images. Does not support any no-output-argument syntaxes. The connectivity matrix input argument, conn, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

bwselect

Image Processing Toolbox

Supports only the 3 and 4 input argument syntaxes: BW2 = bwselect(BW,c,r) and BW2 = bwselect(BW,c,r,n). The optional fourth input argument, n, must be a compile-time constant. In addition, with code generation, bwselect only supports only the 1 and 2 output argument syntaxes: BW2 = bwselect(___) or [BW2, idx] = bwselect(___).

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

bwtraceboundary

Image Processing Toolbox

The dir, fstep, and conn arguments must be compile-time constants.

MATLAB Function Block support: No.

bwunpack

Image Processing Toolbox

Generated code for this function uses a precompiled platform-specific shared library.

MATLAB Function Block support: Yes. The input argument M must be a compile-time constant.

ca2tf

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

cameraMatrix

Computer Vision System Toolbox

Supports MATLAB Function block: No

cameraParameters

Computer Vision System Toolbox

Supports MATLAB Function block: No
Use the toStruct method to pass a cameraParameters object into generated code. See the Code Generation for Depth Estimation From Stereo Video example.

cameraPose

Computer Vision System Toolbox

Supports MATLAB Function block: No

cameraPoseToExtrinsics

Computer Vision System Toolbox

Supports MATLAB Function block: No

cart2hom

Robotics System Toolbox

Supports MATLAB Function block: Yes

cart2pol

MATLAB

—

cart2sph

MATLAB

—

cart2sphvec

Phased Array System Toolbox

Does not support variable-size inputs.

cast

MATLAB

—

cat

MATLAB

Does not support concatenation of cell arrays.
If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

cbfweights

Phased Array System Toolbox

Does not support variable-size inputs.

cdf

Statistics and Machine Learning Toolbox

—

ceil

MATLAB

—

ceil

Fixed-Point Designer

—

cell

MATLAB

cfirpm

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

char

MATLAB

Does not support cell arrays.

cheb1ap

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

cheb1ord

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

cheb2ap

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

cheb2ord

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

chebwin

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

cheby1

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

cheby2

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

ClassificationECOC or CompactClassificationECOC

chi2cdf

Statistics and Machine Learning Toolbox

—

chi2inv

Statistics and Machine Learning Toolbox

—

chi2pdf

Statistics and Machine Learning Toolbox

—

chi2rnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

chi2stat

Statistics and Machine Learning Toolbox

—

chol

MATLAB

—

circpol2pol

Phased Array System Toolbox

Does not support variable-size inputs.

circshift

MATLAB

Does not support cell arrays for the first argument.

cl2tf

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

class

MATLAB

—

Statistics and Machine Learning Toolbox

When you train one of these models using fitcecoc or Classification Learner:

The predictor variables in the input argument Tbl cannot be sparse. The predictor data input argument value X must be a full, numeric matrix.
The class labels input argument value (Y) cannot be a categorical array.
The ClassNames name-value pair argument cannot be a categorical array.
You cannot use the CategoricalPredictors name-value pair argument or supply a table containing at least one categorical predictor. That is, code generation does not support categorical predictors. To dummy-code variables that you want treated as categorical, use dummyvar.
All binary learners must be support vector machines or logistic-regression, linear classification models. That is, for the Learners name-value pair argument, you can specify
- 'svm'
- An SVM template object or a cell vector of such objects (see templateSVM).
- A linear classification model template object or a cell vector of such objects (see templateLinear).
- For limitations on ClassificationSVM or ClassificationLinear model objects, see their entries in this table.
You cannot specify to fit posterior probabilities by using the FitPosterior name-value pair argument.

ClassificationLinear

Statistics and Machine Learning Toolbox

When you train one of these models using fitclinear:

The predictor data input argument value X must be a full, numeric matrix.
The class labels input argument value (Y) cannot be a categorical array.
The ClassNames name-value pair argument cannot be a categorical array.
Logistic regression learners are supported only. That is, you can specify 'logistic' only for the Learner name-value pair argument.
You can specify one regularization strength only. That is, you can specify 'auto' or a nonnegative scalar only for the Lambda name-value pair argument.
You cannot specify a score transformation function by using the ScoreTransform name-value pair argument or by assigning the ScoreTransform object property.

ClassificationSVM or CompactClassificationSVM

Statistics and Machine Learning Toolbox

When you train one of these models using fitcsvm or Classification Learner:

The class labels input argument value (Y) cannot be a categorical array.
The ClassNames name-value pair argument cannot be a categorical array.
You cannot use the CategoricalPredictors name-value pair argument or supply a table containing at least one categorical predictor. That is, code generation does not support categorical predictors. To dummy-code variables that you want treated as categorical, use dummyvar.
MATLAB does not support one-class learning.
You cannot specify a score transformation function by using the ScoreTransform name-value pair argument or by assigning the ScoreTransform object property. Consequently, saveCompactModel cannot accept compact SVM models equipped to estimate class posterior probabilities, that is, models returned by fitPosterior or fitSVMPosterior.

colon

MATLAB

Does not accept complex inputs.
The input i cannot have a logical value.
Does not accept vector inputs.
Inputs must be constants.
Uses single-precision arithmetic to produce single-precision results.

comm.ACPR

Communications System Toolbox

comm.AGC

Communications System Toolbox

comm.AlgebraicDeinterleaver

Communications System Toolbox

comm.APPDecoder

Communications System Toolbox

comm.AWGNChannel

Communications System Toolbox

comm.BarkerCode

Communications System Toolbox

comm.BasebandFileReader

Communications System Toolbox

comm.BasebandFileWriter

Communications System Toolbox

comm.BCHDecoder

Communications System Toolbox

comm.BCHEncoder

Communications System Toolbox

comm.BinarySymmetricChannel

Communications System Toolbox

comm.BlockDeinterleaver

Communications System Toolbox

comm.BlockInterleaver

Communications System Toolbox

comm.BPSKDemodulator

Communications System Toolbox

comm.BPSKModulator

Communications System Toolbox

comm.CarrierSynchronizer

Communications System Toolbox

comm.CCDF

Communications System Toolbox

comm.CoarseFrequencyCompensator

Communications System Toolbox

comm.ConstellationDiagram

Communications System Toolbox

Supports MEX code generation through an auto-extrinsic capability. Does not support code generation for standalone applications.
System Objects in MATLAB Code Generation

comm.ConvolutionalDeinterleaver

Communications System Toolbox

comm.ConvolutionalEncoder

Communications System Toolbox

comm.ConvolutionalInterleaver

Communications System Toolbox

comm.CPFSKDemodulator

Communications System Toolbox

comm.CPFSKModulator

Communications System Toolbox

comm.CPMCarrierPhaseSynchronizer

Communications System Toolbox

comm.CPMDemodulator

Communications System Toolbox

comm.CPMModulator

Communications System Toolbox

comm.CRCDetector

Communications System Toolbox

comm.CRCGenerator

Communications System Toolbox

comm.DBPSKDemodulator

Communications System Toolbox

comm.DBPSKModulator

Communications System Toolbox

comm.Descrambler

Communications System Toolbox

comm.DifferentialDecoder

Communications System Toolbox

comm.DifferentialEncoder

Communications System Toolbox

comm.DiscreteTimeVCO

Communications System Toolbox

comm.DPSKDemodulator

Communications System Toolbox

comm.DPSKModulator

Communications System Toolbox

comm.DQPSKDemodulator

Communications System Toolbox

comm.DQPSKModulator

Communications System Toolbox

comm.ErrorRate

Communications System Toolbox

comm.EVM

Communications System Toolbox

comm.FMBroadcastDemodulator

comm.EyeDiagram

Communications System Toolbox

Supports MEX code generation through an auto-extrinsic capability. Does not support code generation for standalone applications.
System Objects in MATLAB Code Generation

Communications System Toolbox

comm.FMBroadcastModulator

Communications System Toolbox

comm.FMDemodulator

Communications System Toolbox

comm.FMModulator

Communications System Toolbox

comm.FSKDemodulator

Communications System Toolbox

comm.FSKModulator

Communications System Toolbox

comm.GeneralQAMDemodulator

Communications System Toolbox

comm.GeneralQAMModulator

Communications System Toolbox

comm.GeneralQAMTCMDemodulator

Communications System Toolbox

comm.GeneralQAMTCMModulator

Communications System Toolbox

comm.GMSKDemodulator

Communications System Toolbox

comm.GMSKModulator

Communications System Toolbox

comm.GMSKTimingSynchronizer

Communications System Toolbox

comm.GoldSequence

Communications System Toolbox

comm.HadamardCode

Communications System Toolbox

comm.HDLCRCDetector

Communications System Toolbox

comm.HDLCRCGenerator

Communications System Toolbox

comm.HDLRSDecoder

Communications System Toolbox

comm.HDLRSEncoder

Communications System Toolbox

comm.HelicalDeinterleaver

Communications System Toolbox

comm.HelicalInterleaver

Communications System Toolbox

comm.IntegrateAndDumpFilter

Communications System Toolbox

comm.IQImbalanceCompensator

Communications System Toolbox

comm.KasamiSequence

Communications System Toolbox

comm.LDPCDecoder

Communications System Toolbox

Using default properties, comm.LDPCDecoder does not support code generation. To generate code, specify the ParityCheckMatrix property as a non-sparse row-column index matrix.
System Objects in MATLAB Code Generation

comm.LDPCEncoder

Communications System Toolbox

comm.LTEMIMOChannel

Communications System Toolbox

comm.MatrixDeinterleaver

Communications System Toolbox

comm.MatrixHelicalScanDeinterleaver

Communications System Toolbox

comm.MatrixHelicalScanInterLeaver

Communications System Toolbox

comm.MatrixInterleaver

Communications System Toolbox

comm.MemorylessNonlinearity

Communications System Toolbox

comm.MER

Communications System Toolbox

comm.MIMOChannel

Communications System Toolbox

comm.MLSEEqualizer

Communications System Toolbox

comm.MSKDemodulator

Communications System Toolbox

comm.MSKModulator

Communications System Toolbox

comm.MSKTimingSynchronizer

Communications System Toolbox

comm.MultiplexedDeinterleaver

Communications System Toolbox

comm.MultiplexedInterleaver

Communications System Toolbox

comm.OFDMDemodulator

Communications System Toolbox

comm.OFDMModulator

Communications System Toolbox

comm.OSTBCCombiner

Communications System Toolbox

comm.OSTBCEncoder

Communications System Toolbox

comm.OQPSKDemodulator

Communications System Toolbox

comm.OQPSKModulator

Communications System Toolbox

comm.PAMDemodulator

Communications System Toolbox

comm.PAMModulator

Communications System Toolbox

comm.PhaseFrequencyOffset

Communications System Toolbox

comm.PhaseNoise

Communications System Toolbox

comm.PNSequence

Communications System Toolbox

comm.PreambleDetector

Communications System Toolbox

comm.PSKCoarseFrequencyEstimator

Communications System Toolbox

comm.PSKDemodulator

Communications System Toolbox

comm.PSKModulator

Communications System Toolbox

comm.PSKTCMDemodulator

Communications System Toolbox

comm.PSKTCMModulator

Communications System Toolbox

comm.QAMCoarseFrequencyEstimator

Communications System Toolbox

comm.QPSKDemodulator

Communications System Toolbox

comm.QPSKModulator

Communications System Toolbox

comm.RaisedCosineReceiveFilter

Communications System Toolbox

comm.RaisedCosineTransmitFilter

Communications System Toolbox

comm.RayleighChannel

Communications System Toolbox

comm.RectangularQAMDemodulator

Communications System Toolbox

comm.RectangularModulator

Communications System Toolbox

comm.RectangularQAMTCMDemodulator

Communications System Toolbox

comm.RectangularQAMTCMModulator

Communications System Toolbox

comm.RicianChannel

Communications System Toolbox

comm.RSDecoder

Communications System Toolbox

comm.RSEncoder

Communications System Toolbox

comm.Scrambler

Communications System Toolbox

comm.SymbolSynchronizer

comm.SphereDecoder

Communications System Toolbox

Communications System Toolbox

comm.ThermalNoise

Communications System Toolbox

comm.TurboDecoder

Communications System Toolbox

comm.TurboEncoder

Communications System Toolbox

comm.ViterbiDecoder

Communications System Toolbox

comm.WalshCode

Communications System Toolbox

compan

MATLAB

—

complex

MATLAB

—

complex

Fixed-Point Designer

—

compressor

Audio System Toolbox

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

Supports MATLAB Function Block: Yes

computer

MATLAB

Information about the computer on which the code generator is running.
Use only when the code generation target is S-function (Simulation) or MEX-function.

cond

MATLAB

—

conj

MATLAB

—

conj

Fixed-Point Designer

—

conndef

Image Processing Toolbox

Input arguments must be compile-time constants.

MATLAB Function Block support: Yes.

continue

MATLAB

—

conv

MATLAB

conv

Fixed-Point Designer

Variable-sized inputs are only supported when the SumMode property of the governing fimath is set to Specify precision or Keep LSB.
For variable-sized signals, you may see different results between MATLAB and the generated code.
- In generated code, the output for variable-sized signals is computed using the SumMode property of the governing fimath.
- In MATLAB, the output for variable-sized signals is computed using the SumMode property of the governing fimath when both inputs are nonscalar. However, if either input is a scalar, MATLAB computes the output using the ProductMode of the governing fimath.

conv2

MATLAB

—

convenc

Communications System Toolbox

—

convergent

Fixed-Point Designer

—

convn

MATLAB

—

cordicabs

Fixed-Point Designer

Variable-size signals are not supported.

cordicangle

Fixed-Point Designer

Variable-size signals are not supported.

cordicatan2

Fixed-Point Designer

Variable-size signals are not supported.

cordiccart2pol

Fixed-Point Designer

Variable-size signals are not supported.

cordiccexp

Fixed-Point Designer

Variable-size signals are not supported.

cordiccos

Fixed-Point Designer

Variable-size signals are not supported.

cordicpol2cart

Fixed-Point Designer

Variable-size signals are not supported.

cordicrotate

Fixed-Point Designer

Variable-size signals are not supported.

cordicsin

Fixed-Point Designer

Variable-size signals are not supported.

cordicsincos

Fixed-Point Designer

Variable-size signals are not supported.

cordicsqrt

Fixed-Point Designer

Variable-size signals are not supported.

cornerPoints

Computer Vision System Toolbox

Supports MATLAB Function block: No
To index locations with this object, use the syntax: points.Location(idx,:), for points object. See visionRecovertformCodeGeneration_kernel.m, which is used in the Introduction to Code Generation with Feature Matching and Registration example.

corrcoef

MATLAB

Row-vector input is only supported when the first two inputs are vectors and nonscalar.

cos

MATLAB

—

cos

Fixed-Point Designer

—

cosd

MATLAB

—

cosh

MATLAB

—

cot

MATLAB

—

cotd

MATLAB

In some cases, returns -Inf when MATLAB returns Inf.
In some cases, returns Inf when MATLAB returns -Inf.

coth

MATLAB

—

cov

MATLAB

If the input is variable-size and is [] at run time, returns [] not NaN.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

cplxpair

MATLAB

—

cross

MATLAB

If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

crossoverFilter

Audio System Toolbox

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

Supports MATLAB Function Block: Yes

csc

MATLAB

—

cscd

MATLAB

In some cases, returns -Inf when MATLAB returns Inf.
In some cases, returns Inf when MATLAB returns -Inf.

csch

MATLAB

—

ctranspose

MATLAB

—

ctranspose

Fixed-Point Designer

—

cummin

MATLAB

—

cummax

MATLAB

—

cumprod

MATLAB

Does not support logical inputs. Cast input to double first.

cumsum

MATLAB

Does not support logical inputs. Cast input to double first.

cumtrapz

MATLAB

—

db2pow

Signal Processing Toolbox

—

dct

Signal Processing Toolbox

Code generation for this function requires the DSP System Toolbox software.
Length of transform dimension must be a power of two. If specified, the pad or truncation value must be constant. Expressions or variables are allowed if their values do not change.
Specifying constants

To specify a constant input for codegen, use coder.Constant. For more information, see Specify Constant Inputs at the Command Line.

ddencmp

Wavelet Toolbox

Variable-size data support must be enabled.

Supports MATLAB Function block: No

de2bi

Communications System Toolbox

—

deal

MATLAB

—

deblank

MATLAB

Supports only inputs from the char class. Does not support cell arrays.
Input values must be in the range 0-127.

dec2bin

MATLAB

If input d is double, d must be less than 2^52.
If input d is single, d must be less than 2^23.
Unless you specify input n to be constant and n is large enough that the output has a fixed number of columns regardless of the input values, this function requires variable-sizing support. Without variable-sizing support, n must be at least 52 for double, 23 for single, 16 for char, 32 for int32, 16 for int16, and so on.

dec2hex

MATLAB

If input d is double, d must be less than 2^52.
If input d is single, d must be less than 2^23.
Unless you specify input n to be constant, and n is large enough that the output has a fixed number of columns regardless of the input values, this function requires variable-sizing support. Without variable-sizing support, n must be at least 13 for double, 6 for single, 4 for char, 8 for int32, 4 for int16, and so on.

dechirp

Phased Array System Toolbox

Does not support variable-size inputs.

deconv

MATLAB

deg2rad

MATLAB

—

del2

MATLAB

—

delayseq

Phased Array System Toolbox

Does not support variable-size inputs.

demosaic

Image Processing Toolbox

The sensorAlignment argument must be a compile-time constant.

MATLAB Function Block support: Yes.

depressionang

Phased Array System Toolbox

Does not support variable-size inputs.

designMultirateFIR

DSP System Toolbox

The inputs to the function must be constants

designParamEQ

Audio System Toolbox

Supports MATLAB Function Block: Yes

designShelvingEQ

Audio System Toolbox

Supports MATLAB Function Block: Yes

designVarSlopeFilter

Audio System Toolbox

Supports MATLAB Function Block: Yes

det

MATLAB

—

detcoef

Wavelet Toolbox

—

Supports MATLAB Function block: No

detcoef2

Wavelet Toolbox

—

Supports MATLAB Function block: No

detectBRISKFeatures

Computer Vision System Toolbox

Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV Library

detectCheckerboardPoints

Computer Vision System Toolbox

Supports MATLAB Function block: No
Code generation will not support specifying images as file names or cell arrays of file names. It supports only checkerboard detection in a single image or stereo pair of images. For example, these syntaxes are supported:

detectCheckerboardPoints(I1)
detectCheckerobarPoints(I1,I2)

I1 and I2 are single grayscale or RGB images.

detectFASTFeatures

Computer Vision System Toolbox

Supports MATLAB Function block: No
Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV LibraryGenerated code for this function uses a precompiled platform-specific shared library.

detectHarrisFeatures

Computer Vision System Toolbox

Compile-time constant input: FilterSize
Supports MATLAB Function block: No
Generated code for this function uses a precompiled platform-specific shared library.

detectMinEigenFeatures

Computer Vision System Toolbox

Compile-time constant input: FilterSize
Supports MATLAB Function block: No
Generated code for this function uses a precompiled platform-specific shared library.

detectMSERFeatures

Computer Vision System Toolbox

Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries
Portable C Code Generation for Functions That Use OpenCV Library
For code generation, the function outputs regions.PixelList as an array. The region sizes are defined in regions.Lengths.

detectSURFFeatures

Computer Vision System Toolbox

Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV Library

detrend

MATLAB

If supplied and not empty, the input argument bp must satisfy the following requirements:
- Be real.
- Be sorted in ascending order.
- Restrict elements to integers in the interval [1, n-2]. n is the number of elements in a column of input argument X , or the number of elements in X when X is a row vector.
- Contain all unique values.
- Variable-Sizing Restrictions for Code Generation of Toolbox Functions

diag

MATLAB

If supplied, the argument representing the order of the diagonal matrix must be a real and scalar integer value.
For variable-size inputs that are variable-length vectors (1-by-: or :-by-1), diag:
- Treats the input as a vector input.
- Returns a matrix with the given vector along the specified diagonal.
For variable-size inputs that are not variable-length vectors, diag:
- Treats the input as a matrix.
- Does not support inputs that are vectors at run time.
- Returns a variable-length vector.
If the input is variable-size (:m-by-:n) and has shape 0-by-0 at run time, the output is 0-by-1 not 0-by-0. However, if the input is a constant size 0-by-0, the output is [].
For variable-size inputs that are not variable-length vectors (1-by-: or :-by-1), diag treats the input as a matrix from which to extract a diagonal vector. This behavior occurs even if the input array is a vector at run time. To force diag to build a matrix from variable-size inputs that are not 1-by-: or :-by-1, use:
- diag(x(:)) instead of diag(x)
- diag(x(:),k) instead of diag(x,k)
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

diag

Fixed-Point Designer

If supplied, the index, k, must be a real and scalar integer value that is not a fi object.

diff

MATLAB

If supplied, the arguments representing the number of times to apply diff and the dimension along which to calculate the difference must be constants.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

disparity

Computer Vision System Toolbox

Compile-time constant input restriction: 'Method'.
Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV Library

divide

Fixed-Point Designer

Any non-fi input must be constant. Its value must be known at compile time so that it can be cast to a fi object.
Complex and imaginary divisors are not supported.
The syntax T.divide(a,b) is not supported.

dop2speed

Phased Array System Toolbox

Does not support variable-size inputs.

dopsteeringvec

Phased Array System Toolbox

Does not support variable-size inputs.

doppler

Communications System Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

dot

MATLAB

—

double

MATLAB

—

double

Fixed-Point Designer

—

downsample

Signal Processing Toolbox

—

dpskdemod

Communications System Toolbox

—

dpskmod

Communications System Toolbox

—

dpss

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

dsp.AdaptiveLatticeFilter

DSP System Toolbox

dsp.AffineProjectionFilter

DSP System Toolbox

dsp.AllpassFilter

DSP System Toolbox

The System object supports code generation only when the Structure property is set to Minimum multiplier or Lattice.

dsp.AllpoleFilter

DSP System Toolbox

System Objects in MATLAB Code Generation
Only the Denominator property is tunable for code generation.

dsp.AnalyticSignal

DSP System Toolbox

dsp.ArrayPlot

DSP System Toolbox

Supports MEX code generation through an auto-extrinsic capability. Does not support code generation for standalone applications.
System Objects in MATLAB Code Generation

dsp.ArrayVectorAdder

DSP System Toolbox

dsp.ArrayVectorDivider

DSP System Toolbox

dsp.ArrayVectorMultiplier

DSP System Toolbox

dsp.ArrayVectorSubtractor

DSP System Toolbox

dsp.AudioFileReader

DSP System Toolbox

You must use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.AudioFileWriter

DSP System Toolbox

You must use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.Autocorrelator

DSP System Toolbox

dsp.BinaryFileReader

DSP System Toolbox

dsp.BinaryFileWriter

DSP System Toolbox

dsp.BiquadFilter

DSP System Toolbox

dsp.BurgAREstimator

DSP System Toolbox

dsp.BurgSpectrumEstimator

DSP System Toolbox

When the FFT length is not a power of 2, use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.CepstralToLPC

DSP System Toolbox

dsp.Channelizer

DSP System Toolbox

dsp.ChannelSynthesizer

DSP System Toolbox

dsp.CICCompensationDecimator

DSP System Toolbox

dsp.CICCompensationInterpolator

DSP System Toolbox

dsp.CICDecimator

DSP System Toolbox

dsp.CICInterpolator

DSP System Toolbox

dsp.Convolver

DSP System Toolbox

dsp.Counter

DSP System Toolbox

dsp.Crosscorrelator

DSP System Toolbox

dsp.CrossSpectrumEstimator

DSP System Toolbox

When the FFT length is not a power of 2, use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.CumulativeProduct

DSP System Toolbox

dsp.CumulativeSum

DSP System Toolbox

dsp.DCBlocker

DSP System Toolbox

dsp.DCT

DSP System Toolbox

dsp.Delay

DSP System Toolbox

dsp.DelayLine

DSP System Toolbox

dsp.Differentiator

DSP System Toolbox

dsp.DigitalDownConverter

DSP System Toolbox

dsp.DigitalUpConverter

DSP System Toolbox

dsp.FarrowRateConverter

dsp.DigitalFilter

DSP System Toolbox

System Objects in MATLAB Code Generation
The SOSMatrix and Scalevalues properties are not supported for code generation.

DSP System Toolbox

dsp.FastTransversalFilter

DSP System Toolbox

dsp.FFT

DSP System Toolbox

Under the following conditions:
- When FFTImplementation is set to 'FFTW'.
- When FFTImplementation is set to 'Auto', FFTLengthSource is set to 'Property', and FFTLength is not a power of 2.
Use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.FilterCascade

DSP System Toolbox

You cannot generate code directly from dsp.FilterCascade. You can use the generateFilteringCode method to generate a MATLAB function. You can generate C/C++ code from this MATLAB function.

dsp.FilteredXLMSFilter

DSP System Toolbox

dsp.FIRDecimator

DSP System Toolbox

dsp.FIRHalfbandDecimator

dsp.FIRFilter

DSP System Toolbox

System Objects in MATLAB Code Generation
Only the Numerator property is tunable for code generation.

DSP System Toolbox

dsp.FIRHalfbandInterpolator

DSP System Toolbox

dsp.FIRInterpolator

DSP System Toolbox

dsp.FIRRateConverter

DSP System Toolbox

dsp.FrequencyDomainAdaptiveFilter

DSP System Toolbox

When the sum of BlockLength and Length is not a power of 2, use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.HighpassFilter

DSP System Toolbox

dsp.Histogram

DSP System Toolbox

This object has no tunable properties for code generation.
System Objects in MATLAB Code Generation

dsp.IDCT

DSP System Toolbox

dsp.IIRHalfbandDecimator

dsp.IFFT

DSP System Toolbox

Under the following conditions:
- When FFTImplementation is set to 'FFTW'.
- When FFTImplementation is set to 'Auto', FFTLengthSource is set to 'Property', and FFTLength is not a power of 2.
Use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.IIRFilter

DSP System Toolbox

Only the Numerator and Denominator properties are tunable for code generation.
System Objects in MATLAB Code Generation

DSP System Toolbox

dsp.IIRHalfbandInterpolator

DSP System Toolbox

dsp.Interpolator

DSP System Toolbox

dsp.KalmanFilter

DSP System Toolbox

dsp.LDLFactor

DSP System Toolbox

dsp.LevinsonSolver

DSP System Toolbox

dsp.LMSFilter

DSP System Toolbox

dsp.LowerTriangularSolver

DSP System Toolbox

dsp.LowpassFilter

DSP System Toolbox

dsp.LPCToAutocorrelation

DSP System Toolbox

dsp.LPCToCepstral

DSP System Toolbox

dsp.LPCToLSF

DSP System Toolbox

dsp.LPCToLSP

DSP System Toolbox

dsp.LPCToRC

DSP System Toolbox

dsp.LSFToLPC

DSP System Toolbox

dsp.LSPToLPC

DSP System Toolbox

dsp.LUFactor

DSP System Toolbox

dsp.Maximum

DSP System Toolbox

dsp.Mean

DSP System Toolbox

dsp.Median

DSP System Toolbox

dsp.MedianFilter

DSP System Toolbox

dsp.MovingAverage

DSP System Toolbox

dsp.MovingMaximum

DSP System Toolbox

dsp.MovingMinimum

DSP System Toolbox

dsp.MovingRMS

DSP System Toolbox

dsp.MovingStandardDeviation

DSP System Toolbox

dsp.MovingVariance

DSP System Toolbox

dsp.Minimum

DSP System Toolbox

dsp.NCO

DSP System Toolbox

dsp.Normalizer

DSP System Toolbox

dsp.PeakFinder

DSP System Toolbox

dsp.PeakToPeak

DSP System Toolbox

dsp.PeakToRMS

DSP System Toolbox

dsp.PhaseExtractor

DSP System Toolbox

dsp.PhaseUnwrapper

DSP System Toolbox

dsp.RCToAutocorrelation

DSP System Toolbox

dsp.RCToLPC

DSP System Toolbox

dsp.RMS

DSP System Toolbox

dsp.RLSFilter

DSP System Toolbox

dsp.SampleRateConverter

DSP System Toolbox

dsp.ScalarQuantizerDecoder

DSP System Toolbox

dsp.ScalarQuantizerEncoder

DSP System Toolbox

dsp.SignalSource

DSP System Toolbox

dsp.SineWave

DSP System Toolbox

This object has no tunable properties for code generation.
System Objects in MATLAB Code Generation

dsp.SpectrumAnalyzer

DSP System Toolbox

Supports MEX code generation through an auto-extrinsic capability. Does not support code generation for standalone applications.
System Objects in MATLAB Code Generation

dsp.SpectrumEstimator

DSP System Toolbox

When the FFT length is not a power of 2, use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.StandardDeviation

DSP System Toolbox

dsp.StateLevels

DSP System Toolbox

dsp.SubbandAnalysisFilter

DSP System Toolbox

dsp.SubbandSynthesisFilter

DSP System Toolbox

dsp.TransferFunctionEstimator

dsp.TimeScope

DSP System Toolbox

Supports MEX code generation through an auto-extrinsic capability. Does not support code generation for standalone applications.
System Objects in MATLAB Code Generation

DSP System Toolbox

When the FFT length is not a power of 2, use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.UDPReceiver

DSP System Toolbox

You must use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.UDPSender

DSP System Toolbox

You must use the packNGo function to package the code generated from this System object and all relevant files in a compressed zip file. Using this zip file, you can relocate, unpack, and rebuild your project in another development environment with no MATLAB installed. For an example, see Package Code for Other Development Environments.
System Objects in MATLAB Code Generation

dsp.UpperTriangularSolver

DSP System Toolbox

dsp.VariableBandwidthFIRFilter

DSP System Toolbox

dsp.VariableBandwidthIIRFilter

DSP System Toolbox

dsp.VariableFractionDelay

DSP System Toolbox

dsp.VariableIntegerDelay

DSP System Toolbox

dsp.Variance

DSP System Toolbox

dsp.VectorQuantizerDecoder

DSP System Toolbox

dsp.VectorQuantizerEncoder

DSP System Toolbox

dsp.ZeroCrossingDetector

dsp.Window

DSP System Toolbox

This object has no tunable properties for code generation.
System Objects in MATLAB Code Generation

DSP System Toolbox

dvbs2ldpc

Communications System Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

dwt

Wavelet Toolbox

—

Supports MATLAB Function block: No

dwt2

Wavelet Toolbox

—

Supports MATLAB Function block: No

dyadup

Wavelet Toolbox

If X is empty, generated code returns X and MATLAB returns [].
Suppose that all of the following conditions are true:
- X is a variable-size array.
- X is not a variable-length column vector (:-by-1).
- X is a column vector at run time.
- 'type' is not supplied.
In generated code, the output for y = dyadup(X,k), where k is optional, matches the output for y = dyadup(X,k,'c'). In MATLAB, the output for y = dyadup(X,k) matches the output for y = dyadup(X,k,'r').
For code generation, when you do not specify 'type', if you want dyadup to treat X as a column vector, X must be a variable-length vector (:-by-1).

Supports MATLAB Function block: No

edge

Image Processing Toolbox

The method, direction, and sigma arguments must be a compile-time constants. In addition, nonprogrammatic syntaxes are not supported. For example, the syntax edge(im), where edge does not return a value but displays an image instead, is not supported.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input arguments thresh and sigma must be compile-time constants.

effearthradius

Phased Array System Toolbox

Does not support variable-size inputs.

eig

MATLAB

V might represent a different basis of eigenvectors, and the eigenvalues in D might not be in the same order as in MATLAB.
- For the generalized eigenvalue problem, [V,D] = eig(A,B), the 'qz' option is always used.
- For the standard eigenvalue problem, [V,D] = eig(A), when A is Hermitian, schur is used to calculate V and D. Otherwise, the results of [V,D] = eig(A) are similar to those obtained using [V,D] = eig(A,eye(size(A)),'qz') in MATLAB, except that the columns of V are normalized.
Options 'balance', and 'nobalance' are not supported for the standard eigenvalue problem. 'chol' is not supported for the symmetric generalized eigenvalue problem.
Outputs are of complex type.
Does not support the option to calculate left eigenvectors.

ellip

Signal Processing Toolbox

Inputs must be constant. Expressions or variables are allowed if their values do not change.

ellipap

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

ellipke

MATLAB

—

ellipord

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

estimateEssentialMatrix

end

MATLAB

—

end

Fixed-Point Designer

—

epipolarLine

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

eps

MATLAB

—

eps

Fixed-Point Designer

Supported for scalar fixed-point signals only.
Supported for scalar, vector, and matrix, fi single and fi double signals.

eq

MATLAB

You cannot use eq to test equality between an enumeration member and a character array or cell array of character arrays.

eq

Fixed-Point Designer

Not supported for fixed-point signals with different biases.

erf

MATLAB

—

erfc

MATLAB

—

erfcinv

MATLAB

—

erfcx

MATLAB

—

erfinv

MATLAB

—

error

MATLAB

Has no effect in standalone code even when run-time error detection is enabled. See Run-Time Error Detection and Reporting in Standalone C/C++ Code.

espritdoa

Phased Array System Toolbox

Does not support variable-size inputs.

Computer Vision System Toolbox

Supports MATLAB Function block: No

estimateFundamentalMatrix

Computer Vision System Toolbox

Compile-time constant input: Method, OutputClass, DistanceType, and ReportRuntimeError.
Supports MATLAB Function block: Yes

estimateGeometricTransform

Computer Vision System Toolbox

Supports MATLAB Function block: No

estimateUncalibratedRectification

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

estimateWorldCameraPose

Computer Vision System Toolbox

Supports MATLAB Function block: No

eul2quat

Robotics System Toolbox

Supports MATLAB Function block: Yes

eul2rotm

Robotics System Toolbox

Supports MATLAB Function block: Yes

eul2tform

Robotics System Toolbox

Supports MATLAB Function block: Yes

evcdf

Statistics and Machine Learning Toolbox

—

evinv

Statistics and Machine Learning Toolbox

—

evpdf

Statistics and Machine Learning Toolbox

—

evrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

evstat

Statistics and Machine Learning Toolbox

—

exp

MATLAB

—

expander

Audio System Toolbox

Supports MATLAB Function Block: Yes

expcdf

Statistics and Machine Learning Toolbox

—

expint

MATLAB

—

expinv

Statistics and Machine Learning Toolbox

—

expm

MATLAB

—

expm1

MATLAB

—

exppdf

Statistics and Machine Learning Toolbox

—

exprnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

expstat

Statistics and Machine Learning Toolbox

—

extendedKalmanFilter

Control System Toolbox™

For more information, see Generate Code for Online State Estimation in MATLAB.

Supports MATLAB Function block: No

extendedKalmanFilter

System Identification Toolbox™

For more information, see Generate Code for Online State Estimation in MATLAB.

Supports MATLAB Function block: No

extractFeatures

Computer Vision System Toolbox

Compile-time constant input restrictions: 'Method'
Supports MATLAB Function block: Yes for Block method only.
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries for BRISK, FREAK, and SURF Methods.
Portable C Code Generation for Functions That Use OpenCV Library

extractHOGFeatures

Computer Vision System Toolbox

Supports MATLAB Function block: No

extractLBPFeatures

Computer Vision System Toolbox

Generates platform-dependent library: No
Supports MATLAB Function block: Yes

extrinsics

Computer Vision System Toolbox

Supports MATLAB Function block: No

extrinsicsToCameraPose

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

eye

MATLAB

classname must be a built-in MATLAB numeric type. Does not invoke the static eye method for other classes. For example, eye(m, n, 'myclass') does not invoke myclass.eye(m,n).
Size arguments must have a fixed size.

factor

MATLAB

The maximum double precision input is 2^33.
The maximum single precision input is 2^25.
The input n cannot have type int64 or uint64.

factorial

MATLAB

—

false

MATLAB

Dimensions must be real, nonnegative, integers.

fcdf

Statistics and Machine Learning Toolbox

—

fclose

MATLAB

—

feof

MATLAB

—

fft

MATLAB

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

fft2

MATLAB

—

fftn

MATLAB

The siz argument must have a fixed size.

fftshift

MATLAB

—

fi

Fixed-Point Designer

Use to create a fixed-point constant or variable.
The default constructor syntax without input arguments is not supported.
The rand fi('PropertyName',PropertyValue...) is not supported. To use property name/property value pairs, you must first specify the value v of the fi object as in fi(v,'PropertyName',PropertyValue...).
If the input value is not known at compile time, you must provide complete numerictype information.
All properties related to data type must be constant for code generation.
numerictype object information must be available for non-fixed-point Simulink^® inputs.

fieldnames

MATLAB

Does not support objects. The input must be a structure.

filter

MATLAB

If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

filter

Fixed-Point Designer

Variable-sized inputs are only supported when the SumMode property of the governing fimath is set to Specify precision or Keep LSB.

filter2

MATLAB

—

filtfilt

Signal Processing Toolbox

Filter coefficients must be constants. Expressions or variables are allowed if their values do not change.

Code generation does not support second-order sections as input. You must use transfer functions.

fimath

Fixed-Point Designer

Fixed-point signals coming in to a MATLAB Function block from Simulink are assigned the fimath object defined in the MATLAB Function dialog in the Model Explorer.
Use to create fimath objects in generated code.
If the ProductMode property of the fimath object is set to anything other than FullPrecision, the ProductWordLength and ProductFractionLength properties must be constant.
If the SumMode property of the fimath object is set to anything other than FullPrecision, the SumWordLength and SumFractionLength properties must be constant.

find

MATLAB

Issues an error if a variable-size input becomes a row vector at run time.
For variable-size inputs, the shape of empty outputs, 0-by-0, 0-by-1, or 1-by-0, depends on the upper bounds of the size of the input. The output might not match MATLAB when the input array is a scalar or [] at run time. If the input is a variable-length row vector, the size of an empty output is 1-by-0, otherwise it is 0-by-1.
Always returns a variable-length vector. Even when you provide the output vector k, the output cannot be fixed-size because the output can contain fewer than k elements. For example, find(x,1) returns a variable-length vector with 1 or 0 elements.

findpeaks

Signal Processing Toolbox

—

finv

Statistics and Machine Learning Toolbox

—

fir1

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

fir2

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

firceqrip

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

fircls

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

fircls1

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

fireqint

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

firgr

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.
Does not support syntaxes that have cell array input.

firhalfband

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

firlpnorm

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.
Does not support syntaxes that have cell array input.

firls

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

firminphase

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

firnyquist

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

firpr2chfb

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

firpm

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

firpmord

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

fitgeotrans

Image Processing Toolbox

The transformtype argument must be a compile-time constant. The function supports the following transformation types: 'nonreflectivesimilarity', 'similarity', 'affine', or 'projective'.

MATLAB Function Block support: Yes.

fix

MATLAB

—

fix

Fixed-Point Designer

—

fixed.Quantizer

Fixed-Point Designer

—

flattopwin

Signal Processing Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

flintmax

MATLAB

—

flip

MATLAB

Does not support cell arrays for the first argument.

flip

Fixed-Point Designer

The dimensions argument must be a built-in type; it cannot be a fi object.

flipdim

MATLAB

Does not support cell arrays for the first argument.

fliplr

MATLAB

Does not support cell arrays.

fliplr

Fixed-Point Designer

—

flipud

MATLAB

Does not support cell arrays.

flipud

Fixed-Point Designer

—

floor

MATLAB

—

floor

Fixed-Point Designer

—

fminbnd

MATLAB

Does not support the problem structure argument.
Ignores the Display option. During execution, does not print status information, including early termination. To test the exit condition, use the third output argument.
The output structure does not include the algorithm or message fields.
Ignores the OutputFcn and PlotFcns options.

fminsearch

MATLAB

Ignores the Display option. Does not print status information during execution. Test the exitflag output for the exit condition.
The output structure does not include the algorithm or message fields.
Ignores the OutputFcn and PlotFcns options.

fogpl

Phased Array System Toolbox

Does not support variable-size inputs.

fopen

MATLAB

Does not support:
- machineformat, encoding, or fileID inputs
- message output
- fopen('all')
- Opening a file in text mode. (The file access type cannot be 'rt'.)
If you disable extrinsic calls, you cannot return fileIDs created with fopen to MATLAB or extrinsic functions. You can use such fileIDs only internally.
When generating C/C++ executables, static libraries, or dynamic libraries, you can open up to 20 files.
The generated code does not report errors from invalid file identifiers. Write your own file open error handling in your MATLAB code. Test whether fopen returns -1, which indicates that the file open failed. For example:
```
...
fid = fopen(filename, 'r');
if fid == -1
		% fopen failed

else
% fopen successful, okay to call fread
A = fread(fid);
...
```
The behavior of the generated code for fread is compiler-dependent if you:
1. Open a file using fopen with a permission of a+.
2. Read the file using fread before calling an I/O function, such as fseek or frewind, that sets the file position indicator.

for

MATLAB

—

for

Fixed-Point Designer

—

fpdf

Statistics and Machine Learning Toolbox

—

fprintf

MATLAB

Does not support:
- b and t subtypes on %u, %o %x, and %X formats.
- $ flag for reusing input arguments.
- printing arrays.
There is no automatic casting. Input arguments must match their format types for predictable results.
Escaped characters are limited to the decimal range of 0–127.
A call to fprintf with fileID equal to 1 or 2 becomes printf in the generated C/C++ code in the following cases:
- The fprintf call is inside a parfor loop.
- Extrinsic calls are disabled.
When the MATLAB behavior differs from the C compiler behavior, fprintf matches the C compiler behavior in the following cases:
- The format specifier has a corresponding C format specifier, for example, %e or %E.
- The fprintf call is inside a parfor loop.
- Extrinsic calls are disabled.
When you call fprintf with the format specifier %s, do not put a null character in the middle of the input character vector. Use fprintf(fid, '%c', char(0)) to write a null character.
When you call fprintf with an integer format specifier, the type of the integer argument must be a type that the target hardware can represent as a native C type. For example, if you call fprintf('%d', int64(n)), the target hardware must have a native C type that supports a 64-bit integer.

fread

MATLAB

precision must be a constant.
The source and output that precision specifies cannot have values 'long', 'ulong', 'unsigned long', 'bitn', and 'ubitn'.
You cannot use the machineformat input.
If the source or output that precision specifies is a C type, for example, int, the target and production sizes for that type must:
- Match.
- Map directly to a MATLAB type.
The source type that precision specifies must map directly to a C type on the target hardware.
If the fread call reads the entire file, all of the data must fit in the largest array available for code generation.
If sizeA is not constant or contains a nonfinite element, then dynamic memory allocation is required.
Treats a char value for source or output as a signed 8-bit integer. Use values between 0 and 127 only.
The generated code does not report file read errors. Write your own file read error handling in your MATLAB code. Test that the number of bytes read matches the number of bytes that you requested. For example:
```
...
N = 100;
[vals, numRead] = fread(fid, N, '*double');
if numRead ~= N
    % fewer elements read than expected
end
...
```

freqspace

MATLAB

—

freqz

Signal Processing Toolbox

Does not support variable-size inputs.
When called with no output arguments, and without a semicolon at the end, freqz returns the complex frequency response of the input filter, evaluated at 512 points.
If the semicolon is added, the function produces a plot of the magnitude and phase response of the filter.
See freqz With No Output Arguments.

frewind

MATLAB

—

frnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

fseek

MATLAB

When the MATLAB behavior differs from the C compiler behavior, the generated code matches the C compiler behavior. Examples include:
- Seeking past the end of a file.
- Seeking away from the end of a file opened with append access.
The offset is passed to the C run-time environment as a signed long data type. Therefore, the offset value must fit in the long data type on the target hardware.

fspecial

Image Processing Toolbox

Inputs must be compile-time constants. Expressions or variables are allowed if their values do not change.

MATLAB Function Block support: Yes. The input arguments hsize, radius, len, and theta must be compile-time constants.

fspl

Phased Array System Toolbox

Does not support variable-size inputs.

fstat

Statistics and Machine Learning Toolbox

—

ftell

MATLAB

When the MATLAB behavior differs from the C compiler behavior, the generated code usually matches the C compiler behavior. For example, if you use fseek to seek past the end of a file, the behavior of ftell in the generated code matches the C compiler behavior.

full

MATLAB

—

fwrite

MATLAB

The precision argument must be a constant.
Does not support precision types 'long', 'ulong', 'unsigned long', 'bitn', and 'ubitn'.
Does not support the machine format (order for writing bytes) input argument.
If the precision is a C type such as int, the target and production sizes for that type must:
- Match.
- Map directly to a MATLAB integer type.
Treats a char type as a signed 8-bit integer. Use values from 0 through 127 only.
When appending to a file and using a skip argument, it must be possible for the C run-time fseek to seek beyond the end of the file and initialize unwritten bytes to 0. This behavior matches the behavior of POSIX^® and Windows^®.

fzero

MATLAB

The first argument must be a function handle. Does not support structure or character vector inputs for the first argument.
Supports up to three output arguments. Does not support the fourth output argument (the output structure).

gain2aperture

Phased Array System Toolbox

Does not support variable-size inputs.

gamcdf

Statistics and Machine Learning Toolbox

—

gaminv

Statistics and Machine Learning Toolbox

—

gamma

MATLAB

—

gammainc

MATLAB

Output is always complex.

gammaincinv

MATLAB

Output is always complex.

gammaln

MATLAB

—

gampdf

Statistics and Machine Learning Toolbox

—

gamrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

gamstat

Statistics and Machine Learning Toolbox

—

gaspl

Phased Array System Toolbox

Does not support variable-size inputs.

gausswin

Signal Processing Toolbox

Allgaspl inputs must be constant. Expressions or variables are allowed if their values do not change.

generateCheckerboardPoints

gccphat

Phased Array System Toolbox

Does not support variable-size inputs.

gcd

MATLAB

—

ge

MATLAB

—

ge

Fixed-Point Designer

Not supported for fixed-point signals with different biases.

Computer Vision System Toolbox

Supports MATLAB Function block: No

genqamdemod

Communications System Toolbox

—

geocdf

Statistics and Machine Learning Toolbox

—

geoinv

Statistics and Machine Learning Toolbox

—

geomean

Statistics and Machine Learning Toolbox

—

geopdf

Statistics and Machine Learning Toolbox

—

geornd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

geostat

Statistics and Machine Learning Toolbox

—

get

Fixed-Point Designer

The syntax structure = get(o) is not supported.

getlsb

Fixed-Point Designer

—

getmsb

Fixed-Point Designer

—

getrangefromclass

Image Processing Toolbox

MATLAB Function Block support: Yes.

gevcdf

Statistics and Machine Learning Toolbox

—

gevinv

Statistics and Machine Learning Toolbox

—

gevpdf

Statistics and Machine Learning Toolbox

—

gevrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

gevstat

Statistics and Machine Learning Toolbox

—

global2localcoord

Phased Array System Toolbox

Does not support variable-size inputs.

gpcdf

Statistics and Machine Learning Toolbox

—

gpinv

Statistics and Machine Learning Toolbox

—

gppdf

Statistics and Machine Learning Toolbox

—

gprnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

gpstat

Statistics and Machine Learning Toolbox

—

gradient

MATLAB

—

gray2bin

Communications System Toolbox

—

grayconnected

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

grazingang

Phased Array System Toolbox

Does not support variable-size inputs.

gt

MATLAB

—

gt

Fixed-Point Designer

Not supported for fixed-point signals with different biases.

hadamard

MATLAB

n must be a fixed-size scalar.

hamming

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

hankel

MATLAB

—

hann

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

Code Generation with VideoDevice System Object

harmmean

Statistics and Machine Learning Toolbox

—

hdl.RAM

MATLAB

—

hex2dec

MATLAB

Does not support cell arrays.

hex2num

MATLAB

Does not support cell arrays.
For n = hex2num(S), size(S,2) <= length(num2hex(0))

hilb

MATLAB

—

hist

MATLAB

Histogram bar plotting not supported. Call with at least one output argument.
If supplied, the second argument x must be a scalar constant.
Inputs must be real.

For the syntax [nout, xout] = hist(y,x):

When y is a fixed-size vector or variable-length vector:
- nout is always a row vector.
- If x is a vector, xout is a vector with the same orientation as x.
- If x is a scalar (fixed-size), xout is a row vector.
nout and xout are column vectors when the following conditions are true:
- y is a matrix
- size(y,1) and size(y,2) do not have fixed length 1
- One of size(y,1) and size(y,2) has length 1 at run time
A variable-size x is interpreted as a vector input even if it is a scalar at run time.
If at least one of the inputs is empty, vector orientations in the output can differ from MATLAB.

histc

MATLAB

The output of a variable-size array that becomes a column vector at run time is a column-vector, not a row-vector.
If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

histeq

Image Processing Toolbox

All the syntaxes that include indexed images are not supported. This includes all syntaxes that accept map as input and return newmap.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input argument N must be a compile-time constant.

hom2cart

Robotics System Toolbox

Supports MATLAB Function block: Yes

horizonrange

Phased Array System Toolbox

Does not support variable-size inputs.

horzcat

Fixed-Point Designer

—

hough

Image Processing Toolbox

The optional parameter names 'Theta' and 'RhoResolution' must be compile-time character vector constants. The optional Theta vector must have a bounded size.

MATLAB Function Block support: Yes. The input argument BW must be fixed size, the RhoResolution parameter must be a compile-time constant, and the Theta vector must have a bounded size.

houghlines

Image Processing Toolbox

The optional parameter names 'FillGap' and 'MinLength' must be compile-time character vector constants. Their associated values need not be compile-time constants.

MATLAB Function Block support: No.

houghpeaks

Image Processing Toolbox

The optional parameter names 'Threshold' and 'NHoodSize' must be compile-time character vector constants. Their associated values need not be compile-time constants.

MATLAB Function Block support: Yes.

hygecdf

Statistics and Machine Learning Toolbox

—

hygeinv

Statistics and Machine Learning Toolbox

—

hygepdf

Statistics and Machine Learning Toolbox

—

hygernd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

hygestat

Statistics and Machine Learning Toolbox

—

hypot

MATLAB

—

icdf

Statistics and Machine Learning Toolbox

—

idct

Signal Processing Toolbox

Code generation for this function requires the DSP System Toolbox software.
Length of transform dimension must be a power of two. If specified, the pad or truncation value must be constant. Expressions or variables are allowed if their values do not change.
Specifying constants

To specify a constant input for codegen, use coder.Constant. For more information, see Specify Constant Inputs at the Command Line.

if, elseif, else

MATLAB

—

idivide

MATLAB

For efficient generated code, MATLAB rules for divide by zero are supported only for the 'round' option.

idwt

Wavelet Toolbox

Supports MATLAB Function block: No

idwt2

Wavelet Toolbox

Variable-size data support must be enabled.

Supports MATLAB Function block: No

ifft

MATLAB

Output is complex.
Does not support the 'symmetric' option.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

ifft2

MATLAB

Does not support the 'symmetric' option.

ifftn

MATLAB

Does not support the 'symmetric' option.
The siz argument must have a fixed size.

ifftshift

MATLAB

—

ifir

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

iircomb

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

iirgrpdelay

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.
Does not support syntaxes that have cell array input.

iirlpnorm

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.
Does not support syntaxes that have cell array input.

iirlpnormc

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.
Does not support syntaxes that have cell array input.

iirnotch

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

iirpeak

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

im2double

MATLAB

MATLAB Function Block support: Yes.

im2int16

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

im2single

Image Processing Toolbox

MATLAB Function Block support: Yes.

im2uint8

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

im2uint16

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imabsdiff

Image Processing Toolbox

MATLAB Function Block support: Yes.

imadjust

Image Processing Toolbox

Does not support syntaxes that include indexed images. This includes all syntaxes that accept map as input and return newmap.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imag

MATLAB

—

imag

Fixed-Point Designer

—

imaq.VideoDevice

Image Acquisition Toolbox™

imbinarize

Image Processing Toolbox

Character vector input arguments must be compile-time constants.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imbothat

Image Processing Toolbox

The input image IM must be either 2-D or 3-D image. The structuring element input argument SE must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imboxfilt

Image Processing Toolbox

MATLAB Function Block support: Yes.

imclearborder

Image Processing Toolbox

The optional second input argument, conn, must be a compile-time constant. Supports only up to 3-D inputs.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imclose

Image Processing Toolbox

The input image IM must be either 2-D or 3-D image. The structuring element input argument SE must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imcomplement

Image Processing Toolbox

Does not support int64 and uint64 data types.

MATLAB Function Block support: Yes.

imcrop

Image Processing Toolbox

The interactive syntaxes, such as I2 = imcrop, are not supported. Indexed images are not supported, including the noninteractive syntax X2 = imcrop(X,map,rect);.

MATLAB Function Block support: Yes.

imdilate

Image Processing Toolbox

The input image IM must be either 2-D or 3-D image. The SE, PACKOPT, and SHAPE input arguments must be a compile-time constant. The structuring element argument SE must be a single element—arrays of structuring elements are not supported. To obtain the same result as that obtained using an array of structuring elements, call the function sequentially.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imerode

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imextendedmax

Image Processing Toolbox

The optional third input argument, conn, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imextendedmin

Image Processing Toolbox

The optional third input argument, conn, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imfill

Image Processing Toolbox

The optional input connectivity, conn and the character vector 'holes' must be compile-time constants.

Supports only up to 3-D inputs.

The interactive mode to select points, imfill(BW,0,CONN) is not supported in code generation.

locations can be a P-by-1 vector, in which case it contains the linear indices of the starting locations. locations can also be a P-by-ndims(I) matrix, in which case each row contains the array indices of one of the starting locations. Once you select a format at compile-time, you cannot change it at run time. However, the number of points in locations can be varied at run time.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imfilter

Image Processing Toolbox

The input image can be either 2-D or 3-D. The value of the input argument, options, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imfindcircles

Image Processing Toolbox

All character vector input arguments and values must be compile-time constants.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: No.

imgaborfilt

Image Processing Toolbox

The wavelength, orientation, SpatialFrequencyBandwidth, and SpatialAspectRatio must be compile-time constants.

The filter bank syntax is not supported.

MATLAB Function Block support: Yes.

imgaussfilt

Image Processing Toolbox

Character vector input arguments must be compile-time constants.

When FilterDomain is 'spatial', if you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imgradient3

Image Processing Toolbox

Character vector input arguments must be compile-time constants.

MATLAB Function Block support: Yes.

imgradientxyz

Image Processing Toolbox

Character vector input arguments must be compile-time constants.

MATLAB Function Block support: Yes.

imhist

Image Processing Toolbox

The optional second input argument, n, must be a compile-time constant. In addition, nonprogrammatic syntaxes are not supported. For example, the syntaxes where imhist displays the histogram are not supported.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input argument N must be a compile-time constant.

imhmax

Image Processing Toolbox

The optional third input argument, conn, must be a compile-time constant

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imhmin

Image Processing Toolbox

The optional third input argument, conn, must be a compile-time constant

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imlincomb

Image Processing Toolbox

The output_class argument must be a compile-time constant. You can specify up to four input image arguments.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

immse

Image Processing Toolbox

MATLAB Function Block support: Yes.

imodwpt

Wavelet Toolbox

Supports MATLAB Function block: No

imodwt

Wavelet Toolbox

Supports MATLAB Function block: No

imopen

Image Processing Toolbox

The input image IM must be either 2-D or 3-D image. The structuring element input argument SE must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imoverlay

Image Processing Toolbox

If you specify the 'color' argument as a character vector, it must be a compile-time constant.

MATLAB Function Block support: Yes.

impyramid

Image Processing Toolbox

The direction argument must be a compile-time constant.

MATLAB Function Block support: Yes. The input argument direction must be a compile-time constant.

imquantize

Image Processing Toolbox

MATLAB Function Block support: Yes.

imread

Image Processing Toolbox

Supports reading of 8-bit JPEG images only. The file name input argument must be a valid absolute path or relative path.

This function generates code that uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The file name input argument must be a compile-time constant.

imreconstruct

Image Processing Toolbox

The optional third input argument, conn, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imref2d

Image Processing Toolbox

The XWorldLimits, YWorldLimits and ImageSize properties can be set only during object construction. When generating code, you can only specify single objects—arrays of objects are not supported.

MATLAB Function Block support: Yes.

imref3d

Image Processing Toolbox

The XWorldLimits, YWorldLimits, ZWorldLimits and ImageSize properties can be set only during object construction. When generating code, you can only specify single objects—arrays of objects are not supported.

MATLAB Function Block support: Yes.

imregionalmax

Image Processing Toolbox

The optional second input argument, conn, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imregionalmin

Image Processing Toolbox

The optional second input argument, conn, must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imresize

Image Processing Toolbox

Does not support indexed images or custom interpolation kernels. All parameter-value pair input arguments must be compile-time constants.

MATLAB Function Block support: Yes. The input arguments Scale and method must be compile-time constants, and the values of the OutputSize parameter, numrows and numcols, must be compile-time constants.

imrotate

Image Processing Toolbox

The method and bbox input argument values must be compile-time constants.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input argument angle must be a compile-time constant.

imtophat

Image Processing Toolbox

The input image IM must be either 2-D or 3-D image. The structuring element input argument SE must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

imtranslate

Image Processing Toolbox

The supports only 2-D translation vectors. 3-D translations are not supported

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input argument translation must be a compile-time constant.

imwarp

Image Processing Toolbox

The geometric transformation object input, tform, must be either affine2d or projective2d. Additionally, the interpolation method and optional parameter names must be character vector constants.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input argument tform must be a compile-time constant.

ind2sub

MATLAB

The first argument should be a valid size vector. Size vectors for arrays with more than intmax elements are not supported.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

inf

MATLAB

Dimensions must be real, nonnegative, integers.

inpolygon

MATLAB

Supports single-precision and double-precision inputs, but uses double-precision arithmetic even if all inputs are single-precision.

insertMarker

Computer Vision System Toolbox

Compile-time constant input: 'Shape' and 'Color'
Supports MATLAB Function block: Yes

insertObjectAnnotation

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
Limitation: Input image must be bounded, see Specify Variable-Size Data Without Dynamic Memory Allocation
System Objects in MATLAB Code Generation

insertShape

Computer Vision System Toolbox

Compile-time constant input: 'Color' and 'SmoothEdges'
Supports MATLAB Function block: Yes

insertText

Computer Vision System Toolbox

Compile-time constant input: Font, FontSize
Supports non-ASCII characters: No
Supports MATLAB Function block: Yes

int8, int16, int32, int64

MATLAB

—

int8, int16, int32, int64

Fixed-Point Designer

—

integralBoxFilter

Image Processing Toolbox

The 'NormalizationFactor' parameter must be a compile-time constant.

MATLAB Function Block support: Yes. The input argument filtersize must be a compile-time constant.

integralImage

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

integratedLoudness

Audio System Toolbox

Supports MATLAB Function block: Yes

interp1

MATLAB

Does not support the 'cubic' method. Instead, use 'v5cubic' or 'spline'.
The input argument x (sample points) must be strictly increasing or strictly decreasing. Indices are not reordered.
If the input argument v (sample values) is a variable-length vector (1-by-: or :-by-1), the shape of the output vq matches the shape in MATLAB.
If the input argument v is variable-size, is not a variable-length vector, and becomes a row vector at run time, an error occurs.
If the input argument xq (query points) is variable-size, is not a variable-length vector, and becomes a row or column vector at run time, an error occurs.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

interp1q

MATLAB

Might not match MATLAB when some Y values are Inf or NaN.

interp2

MATLAB

Xq and Yq must be the same size. Use meshgrid to evaluate on a grid.
For best results, provide X and Y as vectors.
For the 'cubic' method, reports an error if the grid does not have uniform spacing. In this case, use the 'spline' method.
For best results when you use the 'spline' method:
- Use meshgrid to create the inputs Xq and Yq.
- Use a small number of interpolation points relative to the dimensions of V. Interpolating over a large set of scattered points can be inefficient.

interp3

MATLAB

Xq, Yq, and Zq must be the same size. Use meshgrid to evaluate on a grid.
For best results, provide X, Y, and Z as vectors.
For the 'cubic' method, reports an error if the grid does not have uniform spacing. In this case, use the 'spline' method.
For best results when you use the 'spline' method:
- Use meshgrid to create the inputs Xq, Yq, and Zq.
- Use a small number of interpolation points relative to the dimensions of V. Interpolating over a large set of scattered points can be inefficient.

interpn

MATLAB

For best results, provide X1,X2,...,Xn as vectors.
Does not support the 'cubic' or 'spline' methods for 2-D and higher interpolation.
The interpolation method must be a constant character vector.

intersect

MATLAB

Does not support cell arrays for the first or second arguments.
When you do not specify the 'rows' option:
- Inputs A and B must be vectors. If you specify the 'legacy' option, inputs A and B must be row vectors.
- The first dimension of a variable-size row vector must have fixed length 1. The second dimension of a variable-size column vector must have fixed length 1.
- The input [] is not supported. Use a 1-by-0 or 0-by-1 input, for example, zeros(1,0), to represent the empty set.
- If you specify the 'legacy' option, empty outputs are row vectors, 1-by-0, never 0-by-0.
When you specify both the 'legacy' option and the 'rows' option, the outputs ia and ib are column vectors. If these outputs are empty, they are 0-by-1, never 0-by-0, even if the output C is 0-by-0.
When the setOrder is 'sorted' or when you specify the 'legacy' option, the inputs must already be sorted in ascending order. The first output, C, is sorted in ascending order.
Complex inputs must be single or double.
When one input is complex and the other input is real, do one of the following:
- Set setOrder to 'stable'.
- Sort the real input in complex ascending order (by absolute value). Suppose the real input is x. Use sort(complex(x))or sortrows(complex(x)).
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

intfilt

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

intlut

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

intmax

MATLAB

—

intmin

MATLAB

—

inv

MATLAB

Singular matrix inputs can produce nonfinite values that differ from MATLAB results.

invhilb

MATLAB

—

ipermute

MATLAB

Does not support cell arrays for the first argument.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

ipermute

Fixed-Point Designer

—

iptcheckconn

Image Processing Toolbox

Input arguments must be compile-time constants.

MATLAB Function Block support: Yes.

iptcheckmap

Image Processing Toolbox

MATLAB Function Block support: Yes.

iqcoef2imbal

Communications System Toolbox

—

iqimbal

Communications System Toolbox

—

iqimbal2coef

Communications System Toolbox

—

iqr

Statistics and Machine Learning Toolbox

—

isa

MATLAB

—

isbanded

MATLAB

—

iscell

MATLAB

—

iscellstr

MATLAB

—

ischar

MATLAB

—

iscolumn

MATLAB

—

iscolumn

Fixed-Point Designer

—

isdeployed

MATLAB Compiler™

Returns true and false as appropriate for MEX and SIM targets
Returns false for other targets

isdiag

MATLAB

—

isempty

MATLAB

—

isempty

Fixed-Point Designer

—

isenum

MATLAB

—

isEpipoleInImage

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

isequal

MATLAB

—

isequal

Fixed-Point Designer

—

isequaln

MATLAB

—

isfi

Fixed-Point Designer

—

isfield

MATLAB

Does not support cell arrays for the second argument

isfimath

Fixed-Point Designer

—

isfimathlocal

Fixed-Point Designer

—

isfinite

MATLAB

—

isfinite

Fixed-Point Designer

—

isfloat

MATLAB

—

ishermitian

MATLAB

—

isinf

MATLAB

—

isinf

Fixed-Point Designer

—

isinteger

MATLAB

—

isletter

MATLAB

Input values from the char class must be in the range 0-127.

islogical

MATLAB

—

ismac

MATLAB

Returns true or false based on the MATLAB version used for code generation.
Use only when the code generation target is S-function (Simulation) or MEX-function.

ismatrix

MATLAB

—

ismcc

MATLAB Compiler

Returns true and false as appropriate for MEX and SIM targets.
Returns false for other targets.

ismember

MATLAB

Does not support cell arrays for the first or second arguments.
Complex inputs must be single or double.
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

isnan

MATLAB

—

isnan

Fixed-Point Designer

—

isnumeric

MATLAB

—

isnumeric

Fixed-Point Designer

—

isnumerictype

Fixed-Point Designer

—

isobject

MATLAB

—

ispc

MATLAB

Returns true or false based on the MATLAB version you use for code generation.
Use only when the code generation target is S-function (Simulation) or MEX-function.

isprime

MATLAB

The maximum double precision input is 2^33.
The maximum single precision input is 2^25.
The input X cannot have type int64 or uint64.

isreal

MATLAB

—

isreal

Fixed-Point Designer

—

isrow

MATLAB

—

isrow

Fixed-Point Designer

—

isscalar

MATLAB

—

isscalar

Fixed-Point Designer

—

issigned

Fixed-Point Designer

—

issorted

MATLAB

Does not support cell arrays for the first argument.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions.
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

isspace

MATLAB

Input values from the char class must be in the range 0–127.

issparse

MATLAB

—

isstrprop

MATLAB

Supports only inputs from char and integer classes.
Input values must be in the range 0-127.

isstruct

MATLAB

—

issymmetric

MATLAB

—

istrellis

Communications System Toolbox

—

istril

MATLAB

—

istriu

MATLAB

—

isunix

MATLAB

Returns true or false based on the MATLAB version used for code generation.
Use only when the code generation target is S-function (Simulation) or MEX-function.

isvector

MATLAB

—

isvector

Fixed-Point Designer

—

kaiser

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

kaiserord

Signal Processing Toolbox

—

kron

MATLAB

—

kmeans

Statistics and Machine Learning Toolbox

If the Start method uses random selections, the initial centroid cluster positions might not match MATLAB.
If the number of rows in X is fixed, does not remove rows of X that contain a NaN.
The cluster centroid locations in C can have a different order than in MATLAB. In this case, the cluster indices in idx have corresponding differences.
If you provide Display, its value must be 'off'.
If you provide Streams, it must be empty and UseSubstreams must be false.
When you set the UseParallel option to true, some computations can execute in parallel even when Replicates is 1. For large data sets, when Replicates is 1, consider setting the UseParallel option to true.

kurtosis

Statistics and Machine Learning Toolbox

—

lab2rgb

Image Processing Toolbox

Character vector input arguments must be compile-time constants.

MATLAB Function Block support: Yes.

label2idx

Image Processing Toolbox

MATLAB Function Block support: No.

label2rgb

Image Processing Toolbox

Referring to the standard syntax:

RGB = label2rgb(L, map, zerocolor, order)

Submit at least two input arguments: the label matrix, L, and the colormap matrix, map.
map must be an n-by-3, double, colormap matrix. You cannot use a character vector containing the name of a MATLAB colormap function or a function handle of a colormap function.
If you set the boundary color zerocolor to the same color as one of the regions, label2rgb will not issue a warning.
If you supply a value for order, it must be 'noshuffle'.

MATLAB Function Block support: Yes.

lcm

MATLAB

—

lcmvweights

Phased Array System Toolbox

Does not support variable-size inputs.

ldivide

MATLAB

—

le

MATLAB

—

le

Fixed-Point Designer

Not supported for fixed-point signals with different biases.

length

MATLAB

—

length

Fixed-Point Designer

—

levinson

Signal Processing Toolbox

Code generation for this function requires the DSP System Toolbox software.
If specified, the order of recursion must be a constant. Expressions or variables are allowed if their values do not change.
Specifying constants

To specify a constant input for codegen, use coder.Constant. For more information, see Specify Constant Inputs at the Command Line.

limiter

Audio System Toolbox

Supports MATLAB Function Block: Yes

lineToBorderPoints

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

linsolve

MATLAB

The option structure must be a constant.
Supports only a scalar option structure input. It does not support arrays of option structures.
Only optimizes these cases:
- UT
- LT
- UHESS = true (the TRANSA can be either true or false)
- SYM = true and POSDEF = true
Other options are equivalent to using mldivide.

linspace

MATLAB

—

load

MATLAB

Use only when generating MEX or code for Simulink simulation. To load compile-time constants, use coder.load.
Does not support use of the function without assignment to a structure or array. For example, use S = load(filename), not load(filename).
The output S must be the name of a structure or array without any subscripting. For example, S(i) = load('myFile.mat') is not allowed.
Arguments to load must be compile-time constant character vectors.
Does not support loading objects.
If the MAT-file contains unsupported constructs, use load(filename,variables) to load only the supported constructs.
You cannot use save in a function intended for code generation. The code generator does not support the save function. Furthermore, you cannot use coder.extrinsic with save. Prior to generating code, you can use save to save the workspace data to a MAT-file.
You must use coder.varsize to explicitly declare variable-size data loaded using the load function.

loadCompactModel

Statistics and Machine Learning Toolbox

Supports these classification model objects saved to a file using saveCompactModel.

Error-correcting output codes models (ECOC), ClassificationECOC or CompactClassificationECOC model objects, respectively.
Linear classification models, ClassificationLinear model objects
Full or compact support vector machines (SVM), ClassificationSVM or CompactClassificationSVM, respectively

For limitations on particular classification models, see the row corresponding to the model object in this table.

local2globalcoord

Phased Array System Toolbox

Does not support variable-size inputs.

log

MATLAB

Generates an error during simulation and returns NaN in generated code when the input value x is real, but the output should be complex. To get the complex result, make the input value complex by passing in complex(x).

log2

MATLAB

—

log10

MATLAB

—

log1p

MATLAB

—

logical

MATLAB

—

logical

Fixed-Point Designer

—

logncdf

Statistics and Machine Learning Toolbox

—

logninv

Statistics and Machine Learning Toolbox

—

lognpdf

Statistics and Machine Learning Toolbox

—

lognrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

lognstat

Statistics and Machine Learning Toolbox

—

logspace

MATLAB

—

loudnessMeter

Audio System Toolbox

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

Supports MATLAB Function block: No

Dynamic Memory Allocation must not be turned off.

lower

MATLAB

Supports only char inputs. Does not support cell arrays.
Input values must be in the range 0-127.

lowerbound

Fixed-Point Designer

—

lsb

Fixed-Point Designer

Supported for scalar fixed-point signals only.
Supported for scalar, vector, and matrix, fi single and double signals.

lsqnonneg

MATLAB

You must enable support for variable-size arrays.
The exit message in the output structure output (the fifth output) is not translated.

lt

MATLAB

—

lteZadoffChuSeq

Communications System Toolbox

—

lt

Fixed-Point Designer

Not supported for fixed-point signals with different biases.

lu

MATLAB

—

mad

Statistics and Machine Learning Toolbox

Input dim cannot be empty.

magic

MATLAB

matchFeatures

Computer Vision System Toolbox

Generates platform-dependent library: Yes for MATLAB host only when using the Exhaustive method.
Generates portable C code for non-host target only when using the Exhaustive method.
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries when not using the Exhaustive method.
Portable C Code Generation for Functions That Use OpenCV Library
Compile-time constant input: 'Method‘ and 'Metric'.
Supports MATLAB Function block: No

max

MATLAB

If specified, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions
Code Generation for Complex Data with Zero-Valued Imaginary Parts..

max

Fixed-Point Designer

—

maxflat

Signal Processing Toolbox

Inputs must be constant. Expressions or variables are allowed if their values do not change.

mdltest

Phased Array System Toolbox

Does not support variable-size inputs.

mean

MATLAB

If specified, dim must be a constant.
The outtype and nanflag options must be constant character vectors.
Does not support the 'native' output data type option for integer types.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

mean

Fixed-Point Designer

N/A

mean2

Image Processing Toolbox

MATLAB Function Block support: Yes.

medfilt2

Image Processing Toolbox

The padopt argument must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The neighborhood size input argument must be a compile-time constant.

median

MATLAB

If specified, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

median

Fixed-Point Designer

—

meshgrid

MATLAB

—

mfilename

MATLAB

—

min

MATLAB

If specified, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

min

Fixed-Point Designer

—

minus

MATLAB

—

minus

Fixed-Point Designer

Any non-fi input must be constant. Its value must be known at compile time so that it can be cast to a fi object.

mkpp

MATLAB

The output structure pp differs from the pp structure in MATLAB. In MATLAB, ppval cannot use the pp structure from the code generator. For code generation, ppval cannot use a pp structure created by MATLAB. unmkpp can use a MATLAB pp structure for code generation.
To create a MATLAB pp structure from a pp structure created by the code generator:
- In code generation, use unmkpp to return the piecewise polynomial details to MATLAB.
- In MATLAB, use mkpp to create the pp structure.
If you do not provide d, then coefs must be two-dimensional and have a fixed number of columns. In this case, the number of columns is the order.
To define a piecewise constant polynomial, coefs must be a column vector or d must have at least two elements.
If you provide d and d is 1, d must be a constant. Otherwise, if the input to ppval is nonscalar, the shape of the output of ppval can differ from ppval in MATLAB.
If you provide d, it must have a fixed length. One of the following sets of statements must be true:
1. Suppose that m = length(d) and npieces = length(breaks) - 1.
```
size(coefs,j) = d(j) 
size(coefs,m+1) = npieces
size(coefs,m+2) = order 
```
  j = 1,2,...,m. The dimension m+2 must be fixed length.
2. Suppose that m = length(d) and npieces = length(breaks) - 1.
```
size(coefs,1) = prod(d)*npieces
size(coefs,2) = order             
```
  The second dimension must be fixed length.
If you do not provide d, the following statements must be true:
Suppose that m = length(d) and npieces = length(breaks) - 1.
```
size(coefs,1) = prod(d)*npieces
size(coefs,2) = order
```
The second dimension must be fixed length.

mldivide

MATLAB

—

mnpdf

Statistics and Machine Learning Toolbox

—

mod

MATLAB

Performs the arithmetic using the output class. Results might not match MATLAB due to differences in rounding errors.
If one of the inputs has type int64 or uint64, then both inputs must have the same type.

mode

MATLAB

Does not support third output argument C (cell array).
If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

modwpt

Wavelet Toolbox

Supports MATLAB Function block: No

modwptdetails

Wavelet Toolbox

Supports MATLAB Function block: No

modwt

Wavelet Toolbox

Supports MATLAB Function block: No

modwtmra

Wavelet Toolbox

Supports MATLAB Function block: No

moment

Statistics and Machine Learning Toolbox

If order is nonintegral and X is real, use moment(complex(X), order).

mpower

MATLAB

If A is a 2-by-2 or larger matrix and B is Inf or -Inf, mpower(A,B) returns a matrix of NaNs.

mpower

Fixed-Point Designer

The exponent input, k, must be constant; that is, its value must be known at compile time.
Variable-size inputs are supported only when the SumMode property of the governing fimath is set to Specify precision or Keep LSB.
For variable-size signals, you can see different results between MATLAB and the generated code.
- In generated code, the output for variable-size signals is computed using the SumMode property of the governing fimath.
- In MATLAB, the output for variable-sized signals is computed using the SumMode property of the governing fimath when both inputs are nonscalar. However, if either input is a scalar, MATLAB computes the output using the ProductMode of the governing fimath.

mpy

Fixed-Point Designer

Code generation in MATLAB does not support the syntax F.mpy(a,b). You must use the syntax mpy(F,a,b).
When you provide complex inputs to the mpy function inside a MATLAB Function block, you must declare the input as complex before running the simulation. To do so, go to the Ports and data manager and set the Complexity parameter for all known complex inputs to On.

mrdivide

MATLAB

—

mrdivide

Fixed-Point Designer

—

MSERRegions

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
For code generation, you must specify both the pixellist cell array and the length of each array, as the second input. The object outputs, regions.PixelList as an array. The region sizes are defined in regions.Lengths.
Generated code for this function uses a precompiled platform-specific shared library.

mtimes

MATLAB

Multiplication of pure imaginary numbers by non-finite numbers might not match MATLAB. The code generator does not specialize multiplication by pure imaginary numbers—it does not eliminate calculations with the zero real part. For example, (Inf + 1i)*1i = (Inf*0 – 1*1) + (Inf*1 + 1*0)i = NaN + Infi.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

mtimes

Fixed-Point Designer

Any non-fi input must be constant; that is, its value must be known at compile time so that it can be cast to a fi object.
Variable-sized inputs are only supported when the SumMode property of the governing fimath is set to Specify precision or Keep LSB.
For variable-sized signals, you may see different results between MATLAB and the generated code.
- In generated code, the output for variable-sized signals is computed using the SumMode property of the governing fimath.
- In MATLAB, the output for variable-sized signals is computed using the SumMode property of the governing fimath when both inputs are nonscalar. However, if either input is a scalar, MATLAB computes the output using the ProductMode of the governing fimath.

multibandParametricEQ

Audio System Toolbox

Supports MATLAB Function Block: Yes

multithresh

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes. The input argument N must be compile-time constant.

musicdoa

Phased Array System Toolbox

Does not support variable-size inputs.

mvdrweights

Phased Array System Toolbox

Does not support variable-size inputs.

NaN or nan

MATLAB

Dimensions must be real, nonnegative, integers.

nancov

Statistics and Machine Learning Toolbox

If the input is variable-size and is [] at run time, returns [] not NaN.

nanmax

Statistics and Machine Learning Toolbox

—

nanmean

Statistics and Machine Learning Toolbox

—

nanmedian

Statistics and Machine Learning Toolbox

—

nanmin

Statistics and Machine Learning Toolbox

—

nanstd

Statistics and Machine Learning Toolbox

—

nansum

Statistics and Machine Learning Toolbox

—

nanvar

Statistics and Machine Learning Toolbox

—

nargin

MATLAB

—

narginchk

MATLAB

—

nargout

MATLAB

For a function with no output arguments, returns 1 if called without a terminating semicolon.

Note: This behavior also affects extrinsic calls with no terminating semicolon. nargout is 1 for the called function in MATLAB.

nargoutchk

MATLAB

—

nbincdf

Statistics and Machine Learning Toolbox

—

nbininv

Statistics and Machine Learning Toolbox

—

nbinpdf

Statistics and Machine Learning Toolbox

—

nbinrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

nbinstat

Statistics and Machine Learning Toolbox

—

ncfcdf

Statistics and Machine Learning Toolbox

—

ncfinv

Statistics and Machine Learning Toolbox

—

ncfpdf

Statistics and Machine Learning Toolbox

—

ncfrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

ncfstat

Statistics and Machine Learning Toolbox

—

nchoosek

MATLAB

When the first input, x, is a scalar, nchoosek returns a binomial coefficient. In this case, x must be a nonnegative integer. It cannot have type int64 or uint64.
When the first input, x, is a vector, nchoosek treats it as a set. In this case, x can have type int64 or uint64.
The second input, k, cannot have type int64 or uint64.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

nctcdf

Statistics and Machine Learning Toolbox

—

nctinv

Statistics and Machine Learning Toolbox

—

nctpdf

Statistics and Machine Learning Toolbox

—

nctrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

nctstat

Statistics and Machine Learning Toolbox

—

ncx2cdf

Statistics and Machine Learning Toolbox

—

ncx2rnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

ncx2stat

Statistics and Machine Learning Toolbox

—

ndgrid

MATLAB

—

ndims

MATLAB

—

ndims

Fixed-Point Designer

—

ne

MATLAB

You cannot use ne to test inequality between an enumeration member and a character array or cell array of character arrays.

ne

Fixed-Point Designer

Not supported for fixed-point signals with different biases.

nearest

Fixed-Point Designer

—

nextpow2

MATLAB

—

nnz

MATLAB

—

noiseGate

Audio System Toolbox

Supports MATLAB Function Block: Yes

noisepow

Phased Array System Toolbox

Does not support variable-size inputs.

nonzeros

MATLAB

—

norm

MATLAB

—

normcdf

Statistics and Machine Learning Toolbox

—

normest

MATLAB

—

norminv

Statistics and Machine Learning Toolbox

—

normpdf

Statistics and Machine Learning Toolbox

—

normrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

normstat

Statistics and Machine Learning Toolbox

—

not

MATLAB

—

npwgnthresh

Phased Array System Toolbox

Does not support variable-size inputs.

nthroot

MATLAB

—

null

MATLAB

Might return a different basis than MATLAB
Does not support rational basis option (second input)

num2hex

MATLAB

—

numberofelements

Fixed-Point Designer

numberofelements will be removed in a future release. Use numel instead.

numel

MATLAB

—

numel

Fixed-Point Designer

—

numerictype

Fixed-Point Designer

Fixed-point signals coming into a MATLAB Function block from Simulink are assigned a numerictype object that is populated with the signal's data type and scaling information.
Returns the data type when the input is a nonfixed-point signal.
Use to create numerictype objects in the generated code.
All numerictype object properties related to the data type must be constant.

nuttallwin

Signal Processing Toolbox

Inputs must be constant. Expressions or variables are allowed if their values do not change.

ocr

Computer Vision System Toolbox

Compile-time constant input: TextLayout, Language, and CharacterSet.
Supports MATLAB Function block: No
Generated code for this function uses a precompiled platform-specific shared library.

ocrText

Computer Vision System Toolbox

Supports MATLAB Function block: No

oct2dec

Communications System Toolbox

—

octaveFilter

Audio System Toolbox

Supports MATLAB Function block: Yes

ode23

MATLAB

All odeset option arguments must be constant.
Does not support a constant mass matrix in the options structure. Provide a mass matrix as a function .
You must provide at least the two output arguments T and Y.
Input types must be homogeneous—all double or all single.
Variable-sizing support must be enabled. Requires dynamic memory allocation when tspan has two elements or you use event functions.

ode45

MATLAB

All odeset option arguments must be constant.
Does not support a constant mass matrix in the options structure. Provide a mass matrix as a function .
You must provide at least the two output arguments T and Y.
Input types must be homogeneous—all double or all single.
Variable-sizing support must be enabled. Requires dynamic memory allocation when tspan has two elements or you use event functions.

odeget

MATLAB

The name argument must be constant.

odeset

MATLAB

All inputs must be constant.

offsetstrel

Image Processing Toolbox

The 'ball' input argument and all other input arguments must be compile-time constants. None of the methods are supported for code generation. When generating code, you can only specify single objects—arrays of objects are not supported.

MATLAB Function Block support: Yes.

ones

MATLAB

Dimensions must be real, nonnegative integers.
The input optimfun must be a function supported for code generation.

opticalFlowFarneback

Computer Vision System Toolbox

Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV Library

opticalFlowHS Computer Vision System Toolbox Supports MATLAB Function block: No

opticalFlowLK Computer Vision System Toolbox Supports MATLAB Function block: No

opticalFlowLKDoG Computer Vision System Toolbox Supports MATLAB Function block: No

optimget

MATLAB

Input parameter names must be constant.

optimset

MATLAB

Does not support the syntax that has no input or output arguments:
```
optimset
```
Functions specified in the options must be supported for code generation.
The fields of the options structure oldopts must be fixed-size fields.
For code generation, optimization functions ignore the Display option.
Does not support the additional options in an options structure created by the Optimization Toolbox™ optimset function. If an input options structure includes the additional Optimization Toolbox options, the output structure does not include them.

ordfilt2

Image Processing Toolbox

The padopt argument must be a compile-time constant.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

or

MATLAB

—

orth

MATLAB

Can return a different basis than MATLAB

otsuthresh

Image Processing Toolbox

MATLAB Function Block support: Yes.

padarray

Image Processing Toolbox

Support only up to 3-D inputs.

Input arguments, padval and direction are expected to be compile-time constants.

MATLAB Function Block support: Yes. The input argument padsize must be a compile-time constant.

pambgfun

Phased Array System Toolbox

Does not support variable-size inputs.
Supported only when output arguments are specified.

parfor

MATLAB

Treated as a for-loop in a MATLAB Function block or when used with fiaccel.
See the parfor reference page in the MATLAB Coder™ documentation.
Generate Code with Parallel for-Loops (parfor).

parzenwin

Signal Processing Toolbox

Inputs must be constant. Expressions or variables are allowed if their values do not change.

pascal

MATLAB

—

pca

Statistics and Machine Learning Toolbox

Ignores the 'Display' value for 'Options' when 'Algorithm' is 'als'.
If supplied, 'Weights' and 'VariableWeights' must be real.
Always returns the fifth output explained as a column vector.
Always returns the sixth output mu as a row vector.
If mu is empty, pca returns mu as a 1-by-0 array. pca does not convert mu to a 0-by-0 empty array.
Does not treat an input matrix X that has all NaN values as a special case. The outputs have the sizes that they have when some of the inputs are finite.

pchip

MATLAB

Input x must be strictly increasing.
Does not remove y entries with NaN values.
If you generate code for the pp = pchip(x,y) syntax, you cannot input pp to the ppval function in MATLAB. To create a MATLAB pp structure from a pp structure created by the code generator:
- In code generation, use unmkpp to return the piecewise polynomial details to MATLAB.
- In MATLAB, use mkpp to create the pp structure.

pdf

Statistics and Machine Learning Toolbox

—

peak2peak

Signal Processing Toolbox

—

peak2rms

Signal Processing Toolbox

—

pearsrnd

Statistics and Machine Learning Toolbox

Matches MATLAB only when generated output r is scalar.

permute

MATLAB

Does not support cell arrays for the first argument.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

permute

Fixed-Point Designer

The dimensions argument must be a built-in type; it cannot be a fi object.

phased.ADPCACanceller

Phased Array System Toolbox

phased.AngleDopplerResponse

Phased Array System Toolbox

phased.ArrayGain

Phased Array System Toolbox

Does not support arrays containing polarized antenna elements, that is, the phased.ShortDipoleAntennaElement or phased.CrossedDipoleAntennaElement antennas.
System Objects in MATLAB Code Generation

phased.ArrayResponse

Phased Array System Toolbox

phased.BackscatterRadarTarget

Phased Array System Toolbox

phased.BarrageJammer

Phased Array System Toolbox

phased.BeamscanEstimator

Phased Array System Toolbox

phased.BeamscanEstimator2D

Phased Array System Toolbox

phased.BeamspaceESPRITEstimator

Phased Array System Toolbox

phased.CFARDetector

Phased Array System Toolbox

phased.CFARDetector2D

Phased Array System Toolbox

phased.Collector

Phased Array System Toolbox

phased.ConstantGammaClutter

phased.ConformalArray

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, plotResponse, and viewArray methods are not supported.
See System Objects in MATLAB Code Generation.

Phased Array System Toolbox

phased.CosineAntennaElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.CrossedDipoleAntennaElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.CustomAntennaElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.CustomMicrophoneElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.DPCACanceller

Phased Array System Toolbox

phased.ElementDelay

Phased Array System Toolbox

phased.ESPRITEstimator

Phased Array System Toolbox

phased.FMCWWaveform

Phased Array System Toolbox

plot method is not supported.
See System Objects in MATLAB Code Generation.

phased.FreeSpace

Phased Array System Toolbox

Requires dynamic memory allocation. See Limitations for System Objects that Require Dynamic Memory Allocation.
See System Objects in MATLAB Code Generation.

phased.FrostBeamformer

Phased Array System Toolbox

Requires dynamic memory allocation. See Limitations for System Objects that Require Dynamic Memory Allocation.
See System Objects in MATLAB Code Generation.

phased.GSCBeamformer

Phased Array System Toolbox

phased.GCCEstimator

Phased Array System Toolbox

phased.IsotropicAntennaElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.LCMVBeamformer

Phased Array System Toolbox

phased.LOSChannel

Phased Array System Toolbox

phased.LinearFMWaveform

Phased Array System Toolbox

plot method is not supported.
See System Objects in MATLAB Code Generation.

phased.MatchedFilter

Phased Array System Toolbox

The CustomSpectrumWindow property is not supported.
System Objects in MATLAB Code Generation

phased.MFSKWaveform

Phased Array System Toolbox

plot method is not supported.
See System Objects in MATLAB Code Generation.

phased.MUSICEstimator

Phased Array System Toolbox

phased.MUSICEstimator2D

Phased Array System Toolbox

phased.MVDRBeamformer

Phased Array System Toolbox

phased.MVDREstimator

Phased Array System Toolbox

phased.MVDREstimator2D

Phased Array System Toolbox

phased.OmnidirectionalMicrophoneElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.PartitionedArray

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, plotResponse, and viewArray methods are not supported.
See System Objects in MATLAB Code Generation.

phased.PhaseCodedWaveform

Phased Array System Toolbox

plot method is not supported.
See System Objects in MATLAB Code Generation.

phased.PhaseShiftBeamformer

Phased Array System Toolbox

phased.Platform

Phased Array System Toolbox

phased.RadarTarget

Phased Array System Toolbox

phased.Radiator

Phased Array System Toolbox

phased.RangeDopplerResponse

Phased Array System Toolbox

The CustomRangeWindow and CustomDopplerWindow properties are not supported.
The plotResponse method is not supported.
See System Objects in MATLAB Code Generation.

phased.RectangularWaveform

Phased Array System Toolbox

plot method is not supported.
See System Objects in MATLAB Code Generation.

phased.ReceiverPreamp

Phased Array System Toolbox

phased.ReplicatedSubarray

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, plotResponse, and viewArray methods are not supported.
See System Objects in MATLAB Code Generation.

phased.RootMUSICEstimator

Phased Array System Toolbox

phased.RootWSFEstimator

Phased Array System Toolbox

phased.ShortDipoleAntennaElement

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, and plotResponse methods are not supported.
See System Objects in MATLAB Code Generation.

phased.STAPSMIBeamformer

Phased Array System Toolbox

phased.SteeringVector

Phased Array System Toolbox

phased.SteppedFMWaveform

Phased Array System Toolbox

plot method is not supported.
See System Objects in MATLAB Code Generation.

phased.StretchProcessor

Phased Array System Toolbox

phased.SubbandMVDRBeamformer

Phased Array System Toolbox

phased.SubbandPhaseShiftBeamformer

Phased Array System Toolbox

phased.SumDifferenceMonopulseTracker

Phased Array System Toolbox

phased.SumDifferenceMonopulseTracker2D

Phased Array System Toolbox

phased.TimeDelayBeamformer

Phased Array System Toolbox

Requires dynamic memory allocation. See Limitations for System Objects that Require Dynamic Memory Allocation.
System Objects in MATLAB Code Generation

phased.TimeDelayLCMVBeamformer

Phased Array System Toolbox

Requires dynamic memory allocation. See Limitations for System Objects that Require Dynamic Memory Allocation.
System Objects in MATLAB Code Generation

phased.TimeVaryingGain

Phased Array System Toolbox

phased.Transmitter

Phased Array System Toolbox

phased.TwoRayChannel

Phased Array System Toolbox

phased.WidebandBackscatterRadarTarget

phased.UCA

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, plotResponse, and viewArray methods are not supported.
See System Objects in MATLAB Code Generation.

phased.ULA

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, plotResponse, and viewArray methods are not supported.
See System Objects in MATLAB Code Generation.

phased.URA

Phased Array System Toolbox

pattern, patternAzimuth, patternElevation, plotResponse, and viewArray methods are not supported.
See System Objects in MATLAB Code Generation.

Phased Array System Toolbox

phased.WidebandCollector

Phased Array System Toolbox

Requires dynamic memory allocation. See Limitations for System Objects that Require Dynamic Memory Allocation.
System Objects in MATLAB Code Generation.

phased.WidebandFreeSpace

Phased Array System Toolbox

phased.WidebandLOSChannel

Phased Array System Toolbox

phased.WidebandRadiator

Phased Array System Toolbox

phased.WidebandTwoRayChannel

Phased Array System Toolbox

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

phitheta2azel

Phased Array System Toolbox

Does not support variable-size inputs.

phitheta2azelpat

Phased Array System Toolbox

Does not support variable-size inputs.

phitheta2uv

Phased Array System Toolbox

Does not support variable-size inputs.

phitheta2uvpat

Phased Array System Toolbox

Does not support variable-size inputs.

physconst

Phased Array System Toolbox

Does not support variable-size inputs.

pi

MATLAB

—

pilotcalib

Phased Array System Toolbox

Does not support variable-size inputs.

pinv

MATLAB

—

planerot

MATLAB

plus

MATLAB

—

plus

Fixed-Point Designer

Any non-fi input must be constant; that is, its value must be known at compile time so that it can be cast to a fi object.

poisscdf

Statistics and Machine Learning Toolbox

—

poissinv

Statistics and Machine Learning Toolbox

—

poisspdf

Statistics and Machine Learning Toolbox

—

poissrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

poisstat

Statistics and Machine Learning Toolbox

—

pol2cart

MATLAB

—

pol2circpol

Phased Array System Toolbox

Does not support variable-size inputs.

polellip

Phased Array System Toolbox

Does not support variable-size inputs.

polloss

Phased Array System Toolbox

Does not support variable-size inputs.

polratio

Phased Array System Toolbox

Does not support variable-size inputs.

polsignature

Phased Array System Toolbox

Does not support variable-size inputs.
Supported only when output arguments are specified.

poly

MATLAB

Does not discard nonfinite input values
Complex input produces complex output
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

polyarea

MATLAB

—

poly2trellis

Communications System Toolbox

—

polyder

MATLAB

The output can contain fewer NaNs than the MATLAB output. However, if the input contains a NaN, the output contains at least one NaN.

polyeig

MATLAB

The basis of the eigenvectors can be different in the generated code than in MATLAB. In general, in the eigenvalues output, the eigenvalues for real inputs are not sorted so that complex conjugate pairs are adjacent.
Differences in eigenvectors and ordering of eigenvalues can lead to differences in the condition numbers output.

polyfit

MATLAB

Variable-Sizing Restrictions for Code Generation of Toolbox Functions

polyint

MATLAB

—

polyval

MATLAB

—

polyvalm

MATLAB

—

pow2

Fixed-Point Designer

—

pow2db

Signal Processing Toolbox

—

power

MATLAB

Generates an error during simulation. When both X and Y are real, but power(X,Y) is complex, returns NaN in the generated code. To get the complex result, make the input value X complex by passing in complex(X). For example, power(complex(X),Y).
Generates an error during simulation. When both X and Y are real, but X .^ Y is complex, returns NaN in generated code. To get the complex result, make the input value X complex by using complex(X). For example, complex(X).^Y.

power

Fixed-Point Designer

The exponent input, k, must be constant. Its value must be known at compile time.

ppval

MATLAB

The size of output v does not match MATLAB when both of the following statements are true:

The input x is a variable-size array that is not a variable-length vector.
x becomes a row vector at run time.

The code generator does not remove the singleton dimensions. However, MATLAB might remove singleton dimensions.

For example, suppose that x is a :4-by-:5 array (the first dimension is variable size with an upper bound of 4 and the second dimension is variable size with an upper bound of 5). Suppose that ppval(pp,0) returns a 2-by-3 fixed-size array. v has size 2-by-3-by-:4-by-:5. At run time, suppose that, size(x,1) =1 and size (x,2) = 5. In the generated code, the size(v) is [2,3,1,5]. In MATLAB, the size is [2,3,5].

prctile

Statistics and Machine Learning Toolbox

Automatic dimension restriction
If the output Y is a vector, the orientation of Y differs from MATLAB when all of the following are true:
- You do not supply the dim input.
- X is a variable-size array.
- X is not a variable-length vector.
- X is a vector at run time.
- The orientation of the vector X does not match the orientation of the vector p.
In this case, the output Y matches the orientation of X not the orientation of p.

predict method of ClassificationECOC and CompactClassificationECOC

Statistics and Machine Learning Toolbox

You must call predict within a function that you declare (that is, you cannot call predict at the top-level).

This table contains input-and-output-argument notes and limitations.

Argument	Notes and Limitations
`Mdl`	You must load the model using `loadCompactModel` within a function that you declare. Must be a compile-time constant, that is, its value cannot change while `codegen` generates the C code.
`X`	Must be a single- or double-precision matrix and can be variable sized. However, the number of columns in `X` must be `numel(Mdl.PredictorNames)`. Rows and columns must correspond to observations and predictors, respectively.
`BinaryLoss`	Must be a supported binary loss function name, for example, `'linear'`
`NumKLInitializations`	You cannot specify this name-value pair argument.
`Options`	You cannot specify this name-value pair argument.
`PosteriorMethod`	You cannot specify this name-value pair argument.
`Verbose`	If you plan to generate a MEX file, then you can specify `Verbose`. Otherwise, `codegen` does not support `Verbose` for other file types.
`NegLoss`	Returned as the same data type as `X`, that is, a single- or double-precision matrix
`Posterior`	You cannot return this output argument.

predict method of ClassificationLinear

Statistics and Machine Learning Toolbox

You must call predict within a function that you declare (that is, you cannot call predict at the top-level).

This table contains input-and-output-argument notes and limitations.

Argument	Notes and Limitations
`Mdl`	You must load the model using `loadCompactModel` within a function that you declare. Must be a compile-time constant, that is, its value cannot change while `codegen` generates the C code.
`X`	Must be a single- or double-precision matrix and can be variable sized. However, the number of columns in `X` must be `numel(Mdl.PredictorNames)`. Rows and columns must correspond to observations and predictors, respectively.
`Score`	Returned as the same data type as `X`, that is, a single- or double-precision matrix

predict method of ClassificationSVM and CompactClassificationSVM

Statistics and Machine Learning Toolbox

You must call predict within a function that you declare (that is, you cannot call predict at the top-level).

This table contains input-and-output-argument notes and limitations.

Argument	Notes and Limitations
`SVMModel`	You must load the model using `loadCompactModel` within a function that you declare. Must be a compile-time constant, that is, its value cannot change while `codegen` generates the code.
`X`	Must be a single- or double-precision matrix and can be variable sized. However, the number of columns in `X` must be `numel(Mdl.PredictorNames)`. Rows and columns must correspond to observations and predictors, respectively.
`score`	Returned as the same data type as `X`, that is, a single- or double-precision matrix

primes

MATLAB

The maximum double precision input is 2^32.
The maximum single precision input is 2^24.
The input n cannot have type int64 or uint64.

prod

MATLAB

If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

projective2d

Image Processing Toolbox

When generating code, you can only specify single objects—arrays of objects are not supported.

MATLAB Function Block support: Yes.

psi

MATLAB

—

psnr

Image Processing Toolbox

MATLAB Function Block support: Yes.

pulsint

Phased Array System Toolbox

Does not support variable-size inputs.

qamdemod

Communications System Toolbox

—

qammod

Communications System Toolbox

—

qmf

Wavelet Toolbox

Supports MATLAB Function block: No

qr

MATLAB

—

quad2d

MATLAB

Generates a warning if the size of the internal storage arrays is not large enough. If a warning occurs, a possible workaround is to divide the region of integration into pieces and sum the integrals over each piece.

quadgk

MATLAB

—

quantile

Statistics and Machine Learning Toolbox

—

quantize

Fixed-Point Designer

—

quat2axang

Robotics System Toolbox

Supports MATLAB Function block: Yes

quat2eul

Robotics System Toolbox

Supports MATLAB Function block: Yes

quat2rotm

Robotics System Toolbox

Supports MATLAB Function block: Yes

quat2tform

Robotics System Toolbox

Supports MATLAB Function block: Yes

quatconj

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset™ software.

quatdivide

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset software.

quatinv

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset software.

quatmod

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset software.

quatmultiply

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset software.

quatnorm

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset software.

quatnormalize

Aerospace Toolbox

Code generation for this function requires the Aerospace Blockset software.

rad2deg

MATLAB

—

radareqpow

Phased Array System Toolbox

Does not support variable-size inputs.

radareqrng

Phased Array System Toolbox

Does not support variable-size inputs.

radareqsnr

Phased Array System Toolbox

Does not support variable-size inputs.

radarvcd

Phased Array System Toolbox

Does not support variable-size inputs.
Supported only when output arguments are specified.

radialspeed

Phased Array System Toolbox

Does not support variable-size inputs.

rainpl

Phased Array System Toolbox

Does not support variable-size inputs.

rand

MATLAB

The data type (class) must be a built-in MATLAB numeric type. Does not invoke the static rand method for other classes. For example, rand(sz,'myclass') does not invoke myclass.rand(sz).
Size arguments must have a fixed size.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

randg

Statistics and Machine Learning Toolbox

—

randi

MATLAB

The data type (class) must be a built-in MATLAB numeric type. Does not invoke the static randi method for other classes. For example, randi(imax,sz,'myclass') does not invoke myclass.randi(imax,sz).
Size arguments must have a fixed size.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

randn

MATLAB

The data type (class) must be a built-in MATLAB numeric type. Does not invoke the static randn method for other classes. For example, randn(sz,'myclass') does not invoke myclass.randn(sz).
Size arguments must have a fixed size.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

random

Statistics and Machine Learning Toolbox

—

randperm

MATLAB

—

randsample

Statistics and Machine Learning Toolbox

When sampling without replacement, the order of the output values might not match MATLAB.

range

Fixed-Point Designer

—

range2beat

Phased Array System Toolbox

Does not support variable-size inputs.

range2bw

Phased Array System Toolbox

Does not support variable-size inputs.

range2time

Phased Array System Toolbox

Does not support variable-size inputs.

rangeangle

Phased Array System Toolbox

Does not support variable-size inputs.

rank

MATLAB

—

raylcdf

Statistics and Machine Learning Toolbox

—

raylinv

Statistics and Machine Learning Toolbox

—

raylpdf

Statistics and Machine Learning Toolbox

—

raylrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

raylstat

Statistics and Machine Learning Toolbox

—

rcond

MATLAB

—

rcosdesign

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

rdcoupling

Phased Array System Toolbox

Does not support variable-size inputs.

rdivide

MATLAB

—

rdivide

Fixed-Point Designer

—

real

MATLAB

—

real

Fixed-Point Designer

—

reallog

MATLAB

—

realmax

MATLAB

—

realmax

Fixed-Point Designer

—

realmin

MATLAB

—

realmin

Fixed-Point Designer

—

realpow

MATLAB

—

realsqrt

MATLAB

—

reconstructScene

Computer Vision System Toolbox

Supports MATLAB Function block: No

rectifyStereoImages

Computer Vision System Toolbox

Compile-time constant input restriction: 'interp' and 'OutputView'
Supports MATLAB Function block: No

rectint

MATLAB

—

recursiveAR

System Identification Toolbox

For Simulink-based workflows, use Recursive Polynomial Model Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

recursiveARMA

System Identification Toolbox

For Simulink-based workflows, use Recursive Polynomial Model Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

recursiveARMAX

System Identification Toolbox

For Simulink-based workflows, use Recursive Polynomial Model Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

recursiveARX

System Identification Toolbox

For Simulink-based workflows, use Recursive Polynomial Model Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

recursiveBJ

System Identification Toolbox

For Simulink-based workflows, use Recursive Polynomial Model Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

recursiveLS

System Identification Toolbox

For Simulink-based workflows, use Recursive Least Squares Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

recursiveOE

System Identification Toolbox

For Simulink-based workflows, use Recursive Polynomial Model Estimator.
For limitations, see Generate Code for Online Parameter Estimation in MATLAB.

Supports MATLAB Function block: No

rectwin

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

regionprops

Image Processing Toolbox

Supports only 2-D images. Does not support the table output type. Does not accept cell arrays as input—use a comma-separated list instead. Does not support the properties ConvexArea, ConvexHull, ConvexImage, Solidity, and SubarrayIdx.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: No.

reinterpretcast

Fixed-Point Designer

—

relativeCameraPose

Computer Vision System Toolbox

Supports MATLAB Function block: No

rem

MATLAB

Performs the arithmetic using the output class. Results might not match MATLAB due to differences in rounding errors.
If one of the inputs has type int64 or uint64, then both inputs must have the same type.

removefimath

Fixed-Point Designer

—

repelem

MATLAB

The input must be a vector or matrix. The input cannot be a multidimensional array.

repmat

MATLAB

Size arguments must have a fixed size.

repmat

Fixed-Point Designer

The dimensions argument must be a built-in type; it cannot be a fi object.

resample

Signal Processing Toolbox

C and C++ code generation for resample requires DSP System Toolbox software.
The upsampling and downsampling factors must be specified as constants. Expressions or variables are allowed if their values do not change.
Specifying constants

To specify a constant input for codegen, use coder.Constant. For more information, see Specify Constant Inputs at the Command Line.

rescale

Fixed-Point Designer

—

reshape

MATLAB

If the input is a compile-time empty cell array, then the size arguments must be constants.
Size arguments must have a fixed size.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

reshape

Fixed-Point Designer

—

return

MATLAB

—

reverberator

Audio System Toolbox

robotics.BinaryOccupancyGrid

Supports MATLAB Function Block: Yes

rgb2gray

MATLAB

MATLAB Function Block support: Yes.

rgb2lab

Image Processing Toolbox

Character vector input arguments must be compile-time constants.

MATLAB Function Block support: Yes.

rgb2ycbcr

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

rms

Signal Processing Toolbox

—

rng

MATLAB

Supports only the 'twister', 'v5normal', and 'v4' generators.
Does not support the 'shuffle' input.
For a MEX target:
- If extrinsic calls are disabled or rng is called inside a parfor loop, the output of rng in the MEX function is not compatible with the rng function in MATLAB. You cannot pass the output of s = rng from the MEX function to rng in MATLAB.
- If extrinsic calls are enabled and rng is not called from inside a parfor loop, only rng can access the data in the structure that rng returns.

Robotics System Toolbox

Supports MATLAB Function block: No

robotics.OccupancyGrid

Robotics System Toolbox

Supports MATLAB Function block: No

robotics.OdometryMotionModel

Robotics System Toolbox

Supports MATLAB Function block: No

robotics.ParticleFilter

Robotics System Toolbox

Supports MATLAB Function block: No

robotics.PRM

Robotics System Toolbox

Supports MATLAB Function block: No

The map input must be specified on creation of the PRM object.

robotics.PurePursuit

Robotics System Toolbox

Supports MATLAB Function block: No

robotics.VectorFieldHistogram

Robotics System Toolbox

Supports MATLAB Function block: No

rocpfa

Phased Array System Toolbox

Does not support variable-size inputs.
Supported only when output arguments are specified.
The NonfluctuatingNoncoherent signal type is not supported.

rocsnr

Phased Array System Toolbox

Does not support variable-size inputs.
Supported only when output arguments are specified.
The NonfluctuatingNoncoherent signal type is not supported.

rootmusicdoa

Phased Array System Toolbox

Does not support variable-size inputs.

roots

MATLAB

Output is variable size.
Output is complex.
Roots are not always in the same order as MATLAB.
Roots of poorly conditioned polynomials do not always match MATLAB.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

rosser

MATLAB

—

rot90

MATLAB

Does not support cell arrays for the first argument.

rot90

Fixed-Point Designer

In the syntax rot90(A,k), the argument k must be a built-in type; it cannot be a fi object.

rotationMatrixToVector

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

rotationVectorToMatrix

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

rotm2axang

Robotics System Toolbox

Supports MATLAB Function block: Yes

rotm2eul

Robotics System Toolbox

Supports MATLAB Function block: Yes

rotm2quat

Robotics System Toolbox

Supports MATLAB Function block: Yes

rotm2tform

Robotics System Toolbox

Supports MATLAB Function block: Yes

rotx

Phased Array System Toolbox

Does not support variable-size inputs.

roty

Phased Array System Toolbox

Does not support variable-size inputs.

rotz

Phased Array System Toolbox

Does not support variable-size inputs.

round

MATLAB

Supports only the syntax Y = round(X).

round

Fixed-Point Designer

—

rsf2csf

MATLAB

—

rsgenpoly

Communications System Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

rsgenpolycoeffs

Communications System Toolbox

All inputs must be constants. Expressions or variables are allowed if their values do not change.

schur

MATLAB

Can return a different Schur decomposition in generated code than in MATLAB.

sec

MATLAB

—

secd

MATLAB

In some cases, returns -Inf when MATLAB returns Inf.
In some cases, returns Inf when MATLAB returns -Inf.

sech

MATLAB

—

selectStrongestBbox

Computer Vision System Toolbox

Supports MATLAB Function block: No

sensorcov

Phased Array System Toolbox

Does not support variable-size inputs.

sensorsig

Phased Array System Toolbox

Does not support variable-size inputs.

setdiff

MATLAB

Does not support cell arrays for the first or second arguments.
When you do not specify the 'rows' option:
- Inputs A and B must be vectors. If you specify the 'legacy' option, inputs A and B must be row vectors.
- The first dimension of a variable-size row vector must have fixed length 1. The second dimension of a variable-size column vector must have fixed length 1.
- Do not use [] to represent the empty set. Use a 1-by-0 or 0-by-1 input, for example, zeros(1,0), to represent the empty set.
- If you specify the 'legacy' option, empty outputs are row vectors, 1-by-0, never 0-by-0.
When you specify both the 'legacy' and 'rows' options, the output ia is a column vector. If ia is empty, it is 0-by-1, never 0-by-0, even if the output C is 0-by-0.
When the setOrder is not 'stable' or when you specify the 'legacy' option, the inputs must already be sorted in ascending order. The first output, C, is sorted in ascending order.
Complex inputs must be single or double.
When one input is complex and the other input is real, do one of the following:
- Set setOrder to 'stable'.
- Sort the real input in complex ascending order (by absolute value). Suppose the real input is x. Use sort(complex(x))or sortrows(complex(x)).
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

setfimath

Fixed-Point Designer

—

setxor

MATLAB

Does not support cell arrays for the first or second arguments.
When you do not specify the 'rows' option:
- Inputs A and B must be vectors with the same orientation. If you specify the 'legacy' option, inputs A and B must be row vectors.
- The first dimension of a variable-size row vector must have fixed length 1. The second dimension of a variable-size column vector must have fixed length 1.
- The input [] is not supported. Use a 1-by-0 or 0-by-1 input, for example , zeros(1,0), to represent the empty set.
- If you specify the 'legacy' option, empty outputs are row vectors, 1-by-0, never 0-by-0.
When you specify both the 'legacy' option and the 'rows' option, the outputs ia and ib are column vectors. If these outputs are empty, they are 0-by-1, never 0-by-0, even if the output C is 0-by-0.
When the setOrder is not 'stable' or when you specify the 'legacy' flag, the inputs must already be sorted in ascending order. The first output, C, is sorted in ascending order.
Complex inputs must be single or double.
When one input is complex and the other input is real, do one of the following:
- Set setOrder to 'stable'.
- Sort the real input in complex ascending order (by absolute value). Suppose the real input is x. Use sort(complex(x))or sortrows(complex(x)).
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

sfi

Fixed-Point Designer

All properties related to data type must be constant for code generation.

sgolay

Signal Processing Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

switch, case, otherwise

shiftdim

MATLAB

Does not support cell arrays for the first argument.
Second argument must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

shiftdim

Fixed-Point Designer

The dimensions argument must be a built-in type; it cannot be a fi object.

shnidman

Phased Array System Toolbox

Does not support variable-size inputs.

sign

MATLAB

—

sign

Fixed-Point Designer

—

sin

MATLAB

—

sin

Fixed-Point Designer

—

sind

MATLAB

—

single

MATLAB

—

single

Fixed-Point Designer

—

sinh

MATLAB

—

size

MATLAB

—

size

Fixed-Point Designer

—

skewness

Statistics and Machine Learning Toolbox

—

sort

MATLAB

Does not support cell arrays for the first argument.
If the input is a complex type, sort orders the output according to absolute value. When x is a complex type that has all zero imaginary parts, use sort(real(x)) to compute the sort order for real types. See Code Generation for Complex Data with Zero-Valued Imaginary Parts.

sort

Fixed-Point Designer

The dimensions argument must be a built-in type; it cannot be a fi object.

sortrows

MATLAB

Does not support cell arrays for the first argument.
If the input is a complex type, sortrows orders the output according to absolute value. When x is a complex type that has all zero imaginary parts, use sortrows(real(x)) to compute the sort order for real types. See Code Generation for Complex Data with Zero-Valued Imaginary Parts.

sosfilt

Signal Processing Toolbox

—

speed2dop

Phased Array System Toolbox

Does not support variable-size inputs.

sph2cart

MATLAB

—

sph2cartvec

Phased Array System Toolbox

Does not support variable-size inputs.

spline

MATLAB

Input x must be strictly increasing.
Does not remove Y entries with NaN values.
Does not report an error for infinite endslopes in Y.
If you generate code for the pp = spline(x,Y) syntax, you cannot input pp to the ppval function in MATLAB. To create a MATLAB pp structure from a pp structure created by the code generator:
- In code generation, use unmkpp to return the piecewise polynomial details to MATLAB.
- In MATLAB, use mkpp to create the pp structure.

spsmooth

Phased Array System Toolbox

Does not support variable-size inputs.

squeeze

MATLAB

Does not support cell arrays.

squeeze

Fixed-Point Designer

—

sqrt

MATLAB

Generates an error during simulation and returns NaN in generated code when the input value x is real, but the output should be complex. To get the complex result, make the input value complex by passing in complex(x).

sqrt

Fixed-Point Designer

Complex and [Slope Bias] inputs error out.
Negative inputs yield a 0 result.

sqrtm

MATLAB

—

stateestimatorEKF

System Identification Toolbox

Supports MATLAB Function block: No

stateestimatorUKF

System Identification Toolbox

Supports MATLAB Function block: No

std

MATLAB

If specified, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

steervec

Phased Array System Toolbox

Does not support variable-size inputs.

stereoAnaglyph

Computer Vision System Toolbox

Supports MATLAB Function block: Yes

stereoParameters

Computer Vision System Toolbox

Supports MATLAB Function block: No
Use the toStruct method to pass a stereoParameters object into generated code. See the Code Generation for Depth Estimation From Stereo Video example.

stokes

Phased Array System Toolbox

Does not support variable-size inputs.
Supported only when output arguments are specified.

storedInteger

Fixed-Point Designer

—

storedIntegerToDouble

Fixed-Point Designer

—

str2double

MATLAB

Does not support cell arrays.
Always returns a complex result.

str2func

MATLAB

Character vector must be constant/known at compile time.

strcmp

MATLAB

Does not support enumeration inputs.
When one input is a cell array and the other input is a character array, the character array must be a compile-time row vector.
When both inputs are empty character arrays that have different sizes, returns true.

strcmpi

MATLAB

Does not support enumeration inputs.
Input values from the char class must be in the range 0-127.
When one input is a cell array and the other input is a character array, the character array must be a compile-time row vector.
When both inputs are empty character arrays that have different sizes, returns true.

strel

Image Processing Toolbox

All of the input arguments must be compile-time constants. None of the methods are supported for code generation. When generating code, you can only specify single objects—arrays of objects are not supported.

MATLAB Function Block support: Yes.

stretchfreq2rng

Phased Array System Toolbox

Does not support variable-size inputs.

stretchlim

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

strfind

MATLAB

Does not support cell arrays.
Inputs must be character row vectors.
Returns an empty output as a 1-by-0 character array.

strjoin

MATLAB

Returns an empty output as a 1-by-0 character array.

strjust

MATLAB

Does not support a cell array of character vectors for the first argument.
Returns an empty output as a 1-by-0 character array.

strncmp

MATLAB

Does not support enumeration inputs.
When one input is a cell array and the other input is a character array, the character array must be a compile-time row vector.

strncmpi

MATLAB

Does not support enumeration inputs.
Input values from the char class must be in the range 0-127.
When one input is a cell array and the other input is a character array, the character array must be a compile-time row vector.

strrep

MATLAB

Does not support cell arrays.
Inputs must be character row vectors.
Returns an empty output as a 1-by-0 character array.

strtok

MATLAB

Does not support a cell array for the first argument.
Returns an empty output as a 1-by-0 character array.

strtrim

MATLAB

Supports only inputs from the char class. Does not support cell arrays.
Input values must be in the range 0-127.
Returns an empty output as a 1-by-0 character array.

struct

MATLAB

You cannot create a structure that contains a cell array. For example, you cannot generate code for:
```
s = struct('a',{{1 2}})
```
If the value argument is a cell array, all elements must have the same type.

struct2cell

MATLAB

For a variable-size structure array, the resulting cell array must be homogeneous. If s is a variable-size structure array, the fields must have the same type.
If struct2cell cannot convert s to a homogeneous cell array, the output cell array is heterogeneous. A heterogeneous output cell array can have a maximum of 1024 elements.

structfun

MATLAB

Does not support the ErrorHandler option.
The number of outputs must be less than or equal to three.

sub

Fixed-Point Designer

Code generation in MATLAB does not support the syntax F.sub(a,b). You must use the syntax sub(F,a,b).

sub2ind

MATLAB

The first argument must be a valid size vector. Size vectors for arrays with more than intmax elements are not supported.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

subsasgn

Fixed-Point Designer

—

subspace

MATLAB

—

subsref

Fixed-Point Designer

—

sum

MATLAB

If specified, dim must be a constant.
The outtype and nanflag options must be constant character vectors.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

sum

Fixed-Point Designer

Variable-size inputs are only supported when the SumMode property of the governing fimath is set to Specify precision or Keep LSB.

superpixels

Image Processing Toolbox

Character vector input arguments must be compile-time constants. The value of 'IsInputLab' (true or false) must be a compile-time constant.

MATLAB Function Block support: No.

surfacegamma

Phased Array System Toolbox

Does not support variable-size inputs.

surfclutterrcs

Phased Array System Toolbox

Does not support variable-size inputs.

SURFPoints

Computer Vision System Toolbox

svd

MATLAB

Uses a different SVD implementation than MATLAB. Because the singular value decomposition is not unique, left and right singular vectors might differ from those computed by MATLAB.

swapbytes

MATLAB

Inheritance of the class of the input to swapbytes in a MATLAB Function block is supported only when the class of the input is double. For non-double inputs, the input port data types must be specified, not inherited.

MATLAB

If all case expressions are scalar integer values, generates a C switch statement. At run time, if the switch value is not an integer, generates an error.
When the case expressions contain noninteger or nonscalar values, the code generator produces C if statements in place of a C switch statement.

systemp

Phased Array System Toolbox

Does not support variable-size inputs.

tan

MATLAB

—

tand

MATLAB

In some cases, returns -Inf when MATLAB returns Inf.
In some cases, returns Inf when MATLAB returns -Inf.

tanh

MATLAB

—

taylortaperc

Phased Array System Toolbox

Does not support variable-size inputs.

taylorwin

dsp.WidebandLOSChannel

Signal Processing Toolbox

Inputs must be constant

tcdf

Statistics and Machine Learning Toolbox

—

tf2ca

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

tf2cl

DSP System Toolbox

All inputs must be constant. Expressions or variables are allowed if their values do not change.

tform2axang

Robotics System Toolbox

Supports MATLAB Function block: Yes

tform2eul

Robotics System Toolbox

Supports MATLAB Function block: Yes

tform2quat

Robotics System Toolbox

Supports MATLAB Function block: Yes

tform2rotm

Robotics System Toolbox

Supports MATLAB Function block: Yes

tform2trvec

Robotics System Toolbox

Supports MATLAB Function block: Yes

thselect

Wavelet Toolbox

Supports MATLAB Function block: No

time2range

Phased Array System Toolbox

Does not support variable-size inputs.

times

MATLAB

Multiplication of pure imaginary numbers by non-finite numbers might not match MATLAB. The code generator does not specialize multiplication by pure imaginary numbers—it does not eliminate calculations with the zero real part. For example, (Inf + 1i)*1i = (Inf*0 – 1*1) + (Inf*1 + 1*0)i = NaN + Infi.

times

Fixed-Point Designer

Any non-fi input must be constant; that is, its value must be known at compile time so that it can be cast to a fi object.
When you provide complex inputs to the times function inside a MATLAB Function block, you must declare the input as complex before running the simulation. To do so, go to the Ports and data manager and set the Complexity parameter for all known complex inputs to On.

tinv

Statistics and Machine Learning Toolbox

—

toeplitz

MATLAB

—

tpdf

Statistics and Machine Learning Toolbox

—

trace

MATLAB

—

transpose

MATLAB

—

transpose

Fixed-Point Designer

—

trapz

MATLAB

If supplied, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

triang

Signal Processing Toolbox

Inputs must be constant

triangulate

Computer Vision System Toolbox

Supports MATLAB Function block: No

tril

MATLAB

If supplied, the argument representing the order of the diagonal matrix must be a real and scalar integer value.

tril

Fixed-Point Designer

If supplied, the index, k, must be a real and scalar integer value that is not a fi object.

triu

MATLAB

If supplied, the argument representing the order of the diagonal matrix must be a real and scalar integer value.

triu

Fixed-Point Designer

If supplied, the index, k, must be a real and scalar integer value that is not a fi object.

trnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

true

MATLAB

Dimensions must be real, nonnegative, integers.

trvec2tform

Robotics System Toolbox

Supports MATLAB Function block: Yes

tstat

Statistics and Machine Learning Toolbox

—

tukeywin

Signal Processing Toolbox

Inputs must be constant.

vision.CascadeObjectDetector

typecast

MATLAB

Value of data type argument must be lowercase.
When you use typecast with inheritance of input port data types in MATLAB Function blocks, you can receive a size error. To avoid this error, specify the block input port data types explicitly.
Integer input or result classes must map directly to a C type on the target hardware.
The input must be a variable-length vector or a fixed-size vector. See
Variable-Sizing Restrictions for Code Generation of Toolbox Functions
The output vector always has the same orientation as the input vector.

ufi

Fixed-Point Designer

All properties related to data type must be constant for code generation.

uint8, uint16, uint32, uint64

MATLAB

—

uint8, uint16, uint32, uint64

Fixed-Point Designer

—

uminus

MATLAB

—

uminus

Fixed-Point Designer

—

undistortImage

Computer Vision System Toolbox

Compile-time constant input restriction: 'interp' and 'OutputView'
Supports MATLAB Function block: No

unidcdf

Statistics and Machine Learning Toolbox

—

unidinv

Statistics and Machine Learning Toolbox

—

unidpdf

Statistics and Machine Learning Toolbox

—

unidrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

unidstat

Statistics and Machine Learning Toolbox

—

unifcdf

Statistics and Machine Learning Toolbox

—

unifinv

Statistics and Machine Learning Toolbox

—

unifpdf

Statistics and Machine Learning Toolbox

—

unifrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

unifstat

Statistics and Machine Learning Toolbox

—

unigrid

Phased Array System Toolbox

Does not support variable-size inputs.

union

MATLAB

Does not support cell arrays for the first or second arguments.
When you do not specify the 'rows' option:
- Inputs A and B must be vectors with the same orientation. If you specify the 'legacy' option, inputs A and B must be row vectors.
- The first dimension of a variable-size row vector must have fixed length 1. The second dimension of a variable-size column vector must have fixed length 1.
- The input[] is not supported. Use a 1-by-0 or 0-by-1 input, for example , zeros(1,0), to represent the empty set.
- If you specify the 'legacy' option, empty outputs are row vectors, 1-by-0, never 0-by-0.
When you specify both the 'legacy' option and the 'rows' option, the outputs ia and ib are column vectors. If these outputs are empty, they are 0-by-1, never 0-by-0, even if the output C is 0-by-0.
When the setOrder is not 'stable' or when you specify the 'legacy' option, the inputs must already be sorted in ascending order. The first output, C, is sorted in ascending order.
Complex inputs must be single or double.
When one input is complex and the other input is real, do one of the following:
- Set setOrder to 'stable'.
- Sort the real input in complex ascending order (by absolute value). Suppose the real input is x. Use sort(complex(x))or sortrows(complex(x)).
Code Generation for Complex Data with Zero-Valued Imaginary Parts.

unique

MATLAB

Does not support cell arrays for the first argument.
When you do not specify the'rows' option:
- The input A must be a vector. If you specify the 'legacy' option, the input A must be a row vector.
- The first dimension of a variable-size row vector must have fixed length 1. The second dimension of a variable-size column vector must have fixed length 1.
- The input [] is not supported. Use a 1-by-0 or 0-by-1 input, for example, zeros(1,0), to represent the empty set.
- If you specify the 'legacy' option, empty outputs are row vectors, 1-by-0, never 0-by-0.
When you specify both the 'rows' option and the 'legacy'option, outputs ia and ic are column vectors. If these outputs are empty, they are 0-by-1, even if the output C is 0-by-0.
When the setOrder is not 'stable' or when you specify the 'legacy' option, the input A must already be sorted in ascending order. The first output, C, is sorted in ascending order.
Complex inputs must be single or double.

unmkpp

MATLAB

pp must be a valid piecewise polynomial structure created by mkpp, spline, or pchip in MATLAB or by the code generator.
Does not support pp structures created by interp1 in MATLAB.

unscentedKalmanFilter

Control System Toolbox

For more information, see Generate Code for Online State Estimation in MATLAB.

Supports MATLAB Function block: No

unscentedKalmanFilter

System Identification Toolbox

For more information, see Generate Code for Online State Estimation in MATLAB.

Supports MATLAB Function block: No

unwrap

MATLAB

Row vector input is only supported when the first two inputs are vectors and nonscalar
Performs arithmetic in the output class. Hence, results might not match MATLAB due to different rounding errors

upfirdn

Signal Processing Toolbox

Code generation for this function requires the DSP System Toolbox software.
Filter coefficients, upsampling factor, and downsampling factor must be constants. Expressions or variables are allowed if their values do not change.
Specifying constants

To specify a constant input for codegen, use coder.Constant. For more information, see Specify Constant Inputs at the Command Line.
Variable-size inputs are not supported.

uplus

MATLAB

—

uplus

Fixed-Point Designer

—

upper

MATLAB

Supports only inputs from the char class. Does not support cell arrays.
Input values must be in the range 0-127.

upperbound

Fixed-Point Designer

—

upsample

Signal Processing Toolbox

Either declare input n as constant, or use the assert function in the calling function to set upper bounds for n. For example,

assert(n<10)

uv2azel

Phased Array System Toolbox

Does not support variable-size inputs.

uv2azelpat

Phased Array System Toolbox

Does not support variable-size inputs.

uv2phitheta

Phased Array System Toolbox

Does not support variable-size inputs.

uv2phithetapat

Phased Array System Toolbox

Does not support variable-size inputs.

val2ind

Phased Array System Toolbox

Does not support variable-size inputs.

vander

MATLAB

—

var

MATLAB

If specified, dim must be a constant.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions

vertcat

Fixed-Point Designer

—

vision.AlphaBlender

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Autocorrelator

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.BlobAnalysis

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

Computer Vision System Toolbox

vision.ChromaResampler

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Convolver

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Crosscorrelator

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.DemosaicInterpolator

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.DCT

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Deinterlacer

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.DeployableVideoPlayer

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
Generated code for this function uses a precompiled platform-specific shared library.
System Objects in MATLAB Code Generation

vision.FFT

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.ForegroundDetector

Computer Vision System Toolbox

Supports MATLAB Function block: No
For MATLAB host target: Generates platform-dependent library
For nonMATLAB host target: Generates portable C code
System Objects in MATLAB Code Generation

vision.GammaCorrector

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.GeometricShearer

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.HistogramBasedTracker

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.HoughLines

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.IDCT

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.IFFT

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.ImageDataTypeConverter

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.KalmanFilter

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.LocalMaximaFinder

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.MarkerInserter

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Maximum

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Median

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.MedianFilter

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Mean

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Minimum

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.PeopleDetector

Computer Vision System Toolbox

Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV Library
System Objects in MATLAB Code Generation

vision.PointTracker

Computer Vision System Toolbox

Supports MATLAB Function block: No
Supports MATLAB Function block: No
Generates portable C code using a C++ compiler that links to OpenCV (Version 2.4.9) libraries.
Portable C Code Generation for Functions That Use OpenCV Library
System Objects in MATLAB Code Generation System Objects in MATLAB Code Generation

vision.Pyramid

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.ShapeInserter

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.StandardDeviation

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.TemplateMatcher

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.Variance

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
System Objects in MATLAB Code Generation

vision.VideoFileReader

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
Generated code for this function uses a precompiled platform-specific shared library.
System Objects in MATLAB Code Generation

Does not generate code for reading compressed images on the Mac.

vision.VideoFileWriter

Computer Vision System Toolbox

Supports MATLAB Function block: Yes
Generated code for this function uses a precompiled platform-specific shared library.
System Objects in MATLAB Code Generation

vitdec

Communications System Toolbox

—

watershed

Image Processing Toolbox

Supports only 2-D images. Supports only 4- or 8-connectivity. Supports only up to 65,535 regions. The output type is always uint16.

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: No.

wavedec

Wavelet Toolbox

Variable-size data support must be enabled.
The input 'wname' must be constant.

Supports MATLAB Function block: No

wavedec2

Wavelet Toolbox

Variable-size data support must be enabled.
The input 'wname' must be constant.

Supports MATLAB Function block: No

waverec

Wavelet Toolbox

Variable-size data support must be enabled.

Supports MATLAB Function block: No

waverec2

Wavelet Toolbox

Variable-size data support must be enabled.

Supports MATLAB Function block: No

wavetableSynthesizer

Audio System Toolbox

Supports MATLAB Function Block: Yes

wblcdf

Statistics and Machine Learning Toolbox

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wblinv

Statistics and Machine Learning Toolbox

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wblpdf

Statistics and Machine Learning Toolbox

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wblrnd

Statistics and Machine Learning Toolbox

Can return a different sequence of numbers than MATLAB if either of the following is true:

The output is nonscalar.
An input parameter is invalid for the distribution.

wblstat

Statistics and Machine Learning Toolbox

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wden

Wavelet Toolbox

Variable-size data support must be enabled.

Supports MATLAB Function block: No

wdencmp

Wavelet Toolbox

Variable-size data support must be enabled.

Supports MATLAB Function block: No

weightingFilter

Audio System Toolbox

wlanHTLTFChannelEstimate

Supports MATLAB Function block: Yes

wextend

Wavelet Toolbox

The generated code can return a column vector when MATLAB returns a row vector if all of the following conditions are true:

TYPE specifies a 1–D extension.
Input X is a variable-size vector.
Input X is not a variable-length row vector (1-by-:).

Code generation does not produce a warning or error message about the shape mismatch. In the output vector that the generated code returns, the values match the values in the output vector that MATLAB returns.

In this case, to generate code that returns a row vector, pass X(:).' instead of X.

Supports MATLAB Function block: No

while

MATLAB

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wilkinson

MATLAB

n must be a fixed-size scalar.

wlanCoarseCFOEstimate

WLAN System Toolbox™

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wlanFieldIndices

WLAN System Toolbox

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wlanFineCFOEstimate

WLAN System Toolbox

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wlanFormatDetect

WLAN System Toolbox

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wlanHTConfig

WLAN System Toolbox

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wlanHTData

WLAN System Toolbox

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wlanHTDataRecover

WLAN System Toolbox

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WLAN System Toolbox

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wlanHTLTFDemodulate

WLAN System Toolbox

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wlanHTLTF

WLAN System Toolbox

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wlanHTSIG

WLAN System Toolbox

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wlanHTSIGRecover

WLAN System Toolbox

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wlanHTSTF

WLAN System Toolbox

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wlanLLTF

WLAN System Toolbox

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wlanLLTFChannelEstimate

WLAN System Toolbox

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wlanLLTFDemodulate

WLAN System Toolbox

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wlanLSIG

WLAN System Toolbox

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wlanLSIGRecover

WLAN System Toolbox

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wlanLSTF

WLAN System Toolbox

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wlanNonHTConfig

WLAN System Toolbox

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wlanNonHTData

WLAN System Toolbox

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wlanNonHTDataRecover

WLAN System Toolbox

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wlanPacketDetect

WLAN System Toolbox

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wlanRecoveryConfig

WLAN System Toolbox

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wlanS1GConfig

WLAN System Toolbox

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wlanTGacChannel

WLAN System Toolbox

wlanTGnChannel

WLAN System Toolbox

wlanVHTLTFChannelEstimate

wlanVHTConfig

WLAN System Toolbox

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wlanVHTData

WLAN System Toolbox

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wlanVHTDataRecover

WLAN System Toolbox

Cannot be used in MATLAB Function block

wlanVHTLTF

WLAN System Toolbox

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WLAN System Toolbox

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wlanVHTLTFDemodulate

WLAN System Toolbox

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wlanVHTSIGA

WLAN System Toolbox

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wlanVHTSIGARecover

WLAN System Toolbox

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wlanVHTSIGBRecover

WLAN System Toolbox

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wlanVHTSIGB

WLAN System Toolbox

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wlanVHTSTF

WLAN System Toolbox

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wlanWaveformGenerator

WLAN System Toolbox

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wnoisest

Wavelet Toolbox

Supports MATLAB Function block: No

wthcoef

Wavelet Toolbox

Supports MATLAB Function block: No

wthcoef2

Wavelet Toolbox

Supports MATLAB Function block: No

wthresh

Wavelet Toolbox

Supports MATLAB Function block: No

xcorr

Signal Processing Toolbox

Leading ones in size(x) must be constant for every input x. If x is variable-size and is a row vector, it must be 1-by-:. It cannot be :-by-: with size(x,1) = 1 at run time.

xor

MATLAB

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ycbcr2rgb

Image Processing Toolbox

If you choose the generic MATLAB Host Computer target platform, generated code uses a precompiled, platform-specific shared library.

MATLAB Function Block support: Yes.

yulewalk

Signal Processing Toolbox

If specified, the order of recursion must be a constant. Expressions or variables are allowed if their values do not change.