Modify code that runs in MATLAB R2014a, but that generates an error in R2014b or later.

Create two surface plots. The default color palates are different depending on which version of MATLAB you are using.

s1 = surface(magic(5));
s2 = surface(magic(5)*10,'FaceColor','yellow');

Modify surface s2 by the color of the surface underneath. Starting in R2014b, the EraseMode property has been removed from all graphics objects. Replace the EraseMode property with a value of the FaceAlpha property for code running in MATLAB R2014b and later.

if verLessThan('matlab','8.4')
    % -- Code to run in MATLAB R2014a and earlier here --
    s2.EraseMode = 'xor';
else
    % -- Code to run in MATLAB R2014b and later here --
    s2.FaceAlpha = .25;
end

Compare the Simulink^® version that is running against version 4.0. If the version is earlier than 4.0, display an error message because the feature is not supported.

if verLessThan('simulink','4.0')
    error('Simulink 4.0 or higher is required.')
end

Compare the Data Acquisition Toolbox™ version that MATLAB is running.

Find the name of the toolbox folder. Your output depends on the toolboxes installed on your system.

dir([matlabroot '/toolbox/d*'])

   daq        database   des      distcomp   dotnetbuilder
   dastudio   datafeed   dials    dml        dspblks

Use the toolbox folder name, daq.

verLessThan('daq','3')

ans =

     0

MATLAB is running Data Acquisition Toolbox version 3 or later.