Control area appearance and behavior
Area properties control the appearance and behavior of an area object. By changing property values, you can modify certain aspects of the area.
Starting in R2014b, you can use dot notation to query and set properties.
a = area(1:10); ec = a.EdgeColor; a.EdgeColor = 'red';
If you are using an earlier release, use the get
and set
functions
instead.
EdgeColor
— Area outline color[0 0 0]
(default) | RGB triplet | character vector of color name | 'none'
| 'flat'
Area outline color, specified as one of these values:
'none'
— Do not draw the
outline.
'flat'
— Use colors from
the axes colormap.
RGB triplet or character vector of color name —
Specify a custom color. The default RGB triplet value of [0
0 0]
corresponds to black.
An RGB triplet is a three-element row vector whose elements
specify the intensities of the red, green, and blue components of
the color. The intensities must be in the range [0,1]
;
for example, [0.4 0.6 0.7]
. This table lists the
long and short color name options and the equivalent RGB triplet values.
Long Name | Short Name | RGB Triplet |
---|---|---|
'yellow' | 'y' | [1 1 0] |
'magenta' | 'm' | [1 0 1] |
'cyan' | 'c' | [0 1 1] |
'red' | 'r' | [1 0 0] |
'green' | 'g' | [0 1 0] |
'blue' | 'b' | [0 0 1] |
'white' | 'w' | [1 1 1] |
'black' | 'k' | [0 0 0] |
Example: 'blue'
Example: [0
0 1]
FaceColor
— Area fill color'flat'
(default) | 'none'
| RGB triplet | character vector of color nameArea fill color, specified as one of these values:
'flat'
— Use colors from
the axes colormap.
'none'
— Do not use any
color for the fill, which allows the background to show through.
RGB triplet or character vector of color name — Specify a custom color.
An RGB triplet is a three-element row vector whose elements
specify the intensities of the red, green, and blue components of
the color. The intensities must be in the range [0,1]
;
for example, [0.4 0.6 0.7]
. This table lists the
long and short color name options and the equivalent RGB triplet values.
Long Name | Short Name | RGB Triplet |
---|---|---|
'yellow' | 'y' | [1 1 0] |
'magenta' | 'm' | [1 0 1] |
'cyan' | 'c' | [0 1 1] |
'red' | 'r' | [1 0 0] |
'green' | 'g' | [0 1 0] |
'blue' | 'b' | [0 0 1] |
'white' | 'w' | [1 1 1] |
'black' | 'k' | [0 0 0] |
EdgeAlpha
— Edge transparency1
(default) | scalar in range [0,1]
Edge transparency, specified as a scalar in the range [0,1]
.
A value of 1 is opaque and 0 is completely transparent. Values between
0 and 1 are semitransparent.
Example: a.EdgeAlpha = 0.5;
FaceAlpha
— Face transparency1
(default) | scalar in range [0,1]
Face transparency, specified as a scalar in the range [0,1]
.
A value of 1 is opaque and 0 is completely transparent. Values between
0 and 1 are semitransparent.
Example: a.FaceAlpha = 0.5;
LineStyle
— Line style'-'
(default) | '--'
| ':'
| '-.'
| 'none'
Line style, specified as one of the line styles listed in this table.
Line Style | Description | Resulting Line |
---|---|---|
'-' | Solid line |
|
'--' | Dashed line |
|
':' | Dotted line |
|
'-.' | Dash-dotted line |
|
'none' | No line | No line |
LineWidth
— Area outline width0.5
(default) | scalar numeric valueArea outline width, specified as a scalar numeric value in point units. One point equals 1/72 inch.
Example: 1.5
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
AlignVertexCenters
— Sharp vertical and horizontal lines'off'
(default) | 'on'
Sharp vertical and horizontal lines, specified as 'off'
or 'on'
.
If the associated figure has a GraphicsSmoothing
property
set to 'on'
and a Renderer
property set
to 'opengl'
, then the figure applies a smoothing
technique to plots. In some cases, this smoothing technique can cause
vertical and horizontal lines to appear uneven in thickness or color.
Use the AlignVertexCenters
property to eliminate
the uneven appearance.
'off'
— Do not sharpen vertical
or horizontal lines. The lines might appear uneven in thickness or
color.
'on'
— Sharpen vertical
and horizontal lines to eliminate an uneven appearance.
Note:
You must have a graphics card that supports this feature. To
see if the feature is supported, type |
BaseLine
— BaselineThis property is read only.
Baseline object. For a list of baseline properties, see Baseline Properties.
BaseValue
— Baseline location0
(default) | numeric scalar valueBaseline location, specified as a numeric scalar value.
ShowBaseLine
— Baseline visibility'on'
(default) | 'off'
Baseline visibility, specified as one of these values:
'on'
— Show the baseline.
'off'
— Hide the baseline.
XData
— x-coordinates[]
(default) | vectorx-coordinates, specified as a vector. Alternatively,
specify the x-coordinates using the input argument X
to
the area
function. If you do not specify X
,
then area
uses the indices of the values in YData
as
the x-coordinates.
XData
and YData
must have
equal lengths.
Example: 1:10
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
| datetime
| duration
YData
— y-coordinates[]
(default) | vectory-coordinates, specified as a vector. Alternatively,
specify the y-coordinates using the input argument Y
to
the area
function.
XData
and YData
must have
equal lengths.
Example: 1:10
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
| duration
XDataSource
— Variable linked to XData
''
(default) | character vector containing MATLAB® workspace variable nameVariable linked to XData
, specified as a
character vector containing a MATLAB workspace variable name. MATLAB evaluates
the variable in the base workspace to generate the XData
.
By default, there is no linked variable so the value is an empty
character vector, ''
. If you link a variable, then MATLAB does
not update the XData
values immediately. To force
an update of the data values, use the refreshdata
function.
Note: If you change one data source property to a variable that contains data of a different dimension, you might cause the function to generate a warning and not render the graph until you have changed all data source properties to appropriate values. |
Example: 'x'
YDataSource
— Variable linked to YData
''
(default) | character vector containing MATLAB workspace variable nameVariable linked to YData
, specified as a
character vector containing a MATLAB workspace variable name. MATLAB evaluates
the variable in the base workspace to generate the YData
.
By default, there is no linked variable so the value is an empty
character vector, ''
. If you link a variable, then MATLAB does
not update the YData
values immediately. To force
an update of the data values, use the refreshdata
function.
Note: If you change one data source property to a variable that contains data of a different dimension, you might cause the function to generate a warning and not render the graph until you have changed all data source properties to appropriate values. |
Example: 'y'
XDataMode
— Selection mode for XData
'auto'
(default) | 'manual'
Selection mode for XData
, specified as one
of these values:
'auto'
— Use the indices
of the values in YData
.
'manual'
— Use manually
specified values. To specify the values, set the XData
property
or pass the input argument X
to the area
function.
Visible
— State of visibility'on'
(default) | 'off'
State of visibility, specified as one of these values:
'on'
— Display the area.
'off'
— Hide the area without deleting it. You still can access the properties
of an invisible area object.
Clipping
— Clipping of area object to axes limits'on'
(default) | 'off'
Clipping of the area object to the axes limits, specified as one of these values:
'on'
— Do not display parts
of the area object that are outside the axes limits.
'off'
— Display the entire area object, even if parts of it appear outside the axes
limits. Parts of the area object might appear
outside the axes limits if you create a plot, set hold on
,
freeze the axis scaling, and then create the area object
so that it is larger than the original plot.
The Clipping
property of the axes that contains
the area object must be set to 'on'
,
otherwise this property has no effect. For more information about
the clipping behavior, see the Clipping
property of the
axes.
EraseMode
— (removed) Technique to draw and erase objects'normal'
(default) | 'none'
| 'xor'
| 'background'
Note:
|
Technique to draw and erase objects, specified as one of these values:
'normal'
— Redraw the affected
region of the display, performing the three-dimensional analysis necessary
to correctly render all objects. This mode produces the most accurate
picture, but is the slowest. The other modes are faster, but do not
perform a complete redraw and, therefore, are less accurate.
'none'
— Do not erase the
object when it is moved or destroyed. After you erase the object with EraseMode,'none'
,
it is still visible on the screen. However, you cannot print the object
because MATLAB does not store any information on its former location.
'xor'
— Draw and erase the
object by performing an exclusive OR (XOR) with the color of the screen
beneath it. This mode does not damage the color of the objects beneath
it. However, the object color depends on the color of whatever is
beneath it on the display.
'background'
— Erase the
object by redrawing it in the axes background color, or the figure
background color if the axes Color
property is 'none'
.
This damages objects that are behind the erased object, but properly
colors the erased object.
MATLAB always prints figures as if the EraseMode
property
of all objects is set to 'normal'
. This means graphics
objects created with EraseMode
set to 'none'
, 'xor'
,
or 'background'
can look different on screen than
on paper. On screen, MATLAB mathematically combines layers of
colors and ignores three-dimensional sorting to obtain greater rendering
speed. However, MATLAB does not apply these techniques to the
printed output. Use the getframe
command or other
screen capture applications to create an image of a figure containing
nonnormal mode objects.
Type
— Type of graphics object'area'
This property is read only.
Type of graphics object, returned as 'area'
.
Use this property to find all objects of a given type within a plotting
hierarchy, for example, searching for the type using findobj
.
Tag
— Tag to associate with area''
(default) | character vectorUser-specified tag to associate with the area,
specified as a character vector. Tags provide a way to identify graphics
objects. Use this property to find all objects with a specific tag
within a plotting hierarchy, for example, searching for the tag using findobj
.
Example: 'January Data'
Data Types: char
UserData
— Data to associate with area[]
(default) | any MATLAB dataData to associate with the area object, specified as any MATLAB data, for example, a scalar, vector, matrix, cell array, character array, table, or structure. MATLAB does not use this data.
To associate multiple sets of data or to attach a field name
to the data, use the getappdata
and setappdata
functions.
Example: 1:100
DisplayName
— Text used for legend label''
(default) | character vectorText used for the legend label, specified as a character vector.
If you do not specify the text, then the legend uses a label of the
form 'dataN'
. The legend does not display until
you call the legend
command.
Example: 'Label Text'
Annotation
— Control for including or excluding area from legendAnnotation
objectThis property is read only.
Control for including or excluding the area from
a legend, returned as an Annotation
object. Set
the underlying IconDisplayStyle
property to one
of these values:
'on'
— Include the area in the legend (default).
'off'
— Do not include the area in the legend.
For example, exclude a stem chart from the legend.
p = plot(1:10,'DisplayName','Line Chart'); hold on s = stem(1:10,'DisplayName','Stem Chart'); hold off s.Annotation.LegendInformation.IconDisplayStyle = 'off'; legend('show')
Alternatively, you can control the items in a legend using the legend
function. Specify the first input
argument as a vector of the graphics objects to include.
p = plot(1:10,'DisplayName','Line Chart'); hold on s = stem(1:10,'DisplayName','Stem Chart'); hold off legend(p)
Parent
— Parent of areaParent of area, specified as an axes, group, or transform object.
Children
— Children of areaGraphicsPlaceholder
arrayThe area has no children. You cannot set this property.
HandleVisibility
— Visibility of object handle'on'
(default) | 'off'
| 'callback'
Visibility of area object handle in the Children
property
of the parent, specified as one of these values:
'on'
— The area object handle is always visible.
'off'
— The area object handle is invisible at all times. This option
is useful for preventing unintended changes to the UI by another function.
Set the HandleVisibility
to 'off'
to
temporarily hide the handle during the execution of that function.
'callback'
— The area object handle is visible from within callbacks or functions
invoked by callbacks, but not from within functions invoked from the
command line. This option blocks access to the area at
the command-line, but allows callback functions to access it.
If the area object is not listed in the Children
property
of the parent, then functions that obtain object handles by searching
the object hierarchy or querying handle properties cannot return it.
This includes get
, findobj
, gca
, gcf
, gco
, newplot
, cla
, clf
, and close
.
Hidden object handles are still valid. Set the root ShowHiddenHandles
property
to 'on'
to list all object handles regardless of
their HandleVisibility
property setting.
ButtonDownFcn
— Mouse-click callback''
(default) | function handle | cell array | character vectorMouse-click callback, specified as one of these values:
Function handle
Cell array containing a function handle and additional arguments
Character vector that is a valid MATLAB command or function, which is evaluated in the base workspace (not recommended)
Use this property to execute code when you click the area. If you specify this property using a function handle, then MATLAB passes two arguments to the callback function when executing the callback:
The area object — You can access properties of the area object from within the callback function.
Event data — This argument is empty for this
property. Replace it with the tilde character (~
)
in the function definition to indicate that this argument is not used.
For more information on how to use function handles to define callback functions, see Callback Definition.
Note:
If the |
Example: @myCallback
Example: {@myCallback,arg3}
UIContextMenu
— Context menuContext menu, specified as a uicontextmenu object. Use this
property to display a context menu when you right-click the area. Create the context menu using the uicontextmenu
function.
Note:
If the |
Selected
— Selection state'off'
(default) | 'on'
Selection state, specified as one of these values:
'on'
— Selected. If you
click the area when in plot edit mode, then MATLAB sets
its Selected
property to 'on'
.
If the SelectionHighlight
property also is set
to 'on'
, then MATLAB displays selection handles
around the area.
'off'
— Not selected.
SelectionHighlight
— Display of selection handles when selected'on'
(default) | 'off'
Display of selection handles when selected, specified as one of these values:
'on'
— Display selection
handles when the Selected
property is set to 'on'
.
'off'
— Never display selection
handles, even when the Selected
property is set
to 'on'
.
PickableParts
— Ability to capture mouse clicks'visible'
(default) | 'none'
Ability to capture mouse clicks, specified as one of these values:
'visible'
— Can capture
mouse clicks only when visible. The Visible
property
must be set to 'on'
. The HitTest
property
determines if the area responds to the click or
if an ancestor does.
'none'
— Cannot capture
mouse clicks. Clicking the area passes the click
to the object below it in the current view of the figure window. The HitTest
property
of the area has no effect.
HitTest
— Response to captured mouse clicks'on'
(default) | 'off'
Response to captured mouse clicks, specified as one of these values:
'on'
— Trigger the ButtonDownFcn
callback
of the area. If you have defined the UIContextMenu
property,
then invoke the context menu.
'off'
— Trigger the callbacks
for the nearest ancestor of the area that has
a HitTest
property set to 'on'
and
a PickableParts
property value that enables the
ancestor to capture mouse clicks.
Note:
The |
HitTestArea
— (removed) Extents of clickable area for area'off'
(default) | 'on'
Note:
|
Extents of clickable area for area, specified as one of these values:
'off'
— Click the area plot to select it. This is the default value.
'on'
— Click anywhere within
the extent of the area plot to select it, that
is, anywhere within the rectangle that encloses the area plot.
Example: 'off'
Interruptible
— Callback interruption'on'
(default) | 'off'
Callback interruption, specified as 'on'
or 'off'
.
The Interruptible
property determines if a running
callback can be interrupted.
Note: There are two callback states to consider:
Whenever MATLAB invokes a callback, that callback
attempts to interrupt a running callback. The |
If the ButtonDownFcn
callback of the area is the running callback, then the Interruptible
property
determines if it another callback can interrupt it:
'on'
— Interruptible. Interruption
occurs at the next point where MATLAB processes the queue, such
as when there is a drawnow
, figure
, getframe
, waitfor
, or pause
command.
If the running callback contains one of these commands, then MATLAB stops the execution of the callback at this point and executes the interrupting callback. MATLAB resumes executing the running callback when the interrupting callback completes. For more information, see Interrupt Callback Execution.
If the running callback does not contain one of these commands, then MATLAB finishes executing the callback without interruption.
'off'
— Not interruptible. MATLAB finishes
executing the running callback without any interruptions.
BusyAction
— Callback queuing'queue'
(default) | 'cancel'
Callback queuing specified as 'queue'
or 'cancel'
.
The BusyAction
property determines how MATLAB handles
the execution of interrupting callbacks.
Note: There are two callback states to consider:
Whenever MATLAB invokes a callback, that callback attempts
to interrupt a running callback. The |
If the ButtonDownFcn
callback of the area tries to interrupt a running callback that cannot be
interrupted, then the BusyAction
property determines
if it is discarded or put in the queue. Specify the BusyAction
property
as one of these values:
'queue'
— Put the interrupting
callback in a queue to be processed after the running callback finishes
execution. This is the default behavior.
'cancel'
— Discard the interrupting
callback.
CreateFcn
— Creation callback''
(default) | function handle | cell array | character vectorCreation callback, specified as one of these values:
Function handle
Cell array containing a function handle and additional arguments
Character vector that is a valid MATLAB command or function, which is evaluated in the base workspace (not recommended)
Use this property to execute code when you create the area. Setting the CreateFcn
property
on an existing area has no effect. You must define
a default value for this property, or define this property using a Name,Value
pair
during area creation. MATLAB executes the
callback after creating the area and setting all
of its properties.
If you specify this callback using a function handle, then MATLAB passes two arguments to the callback function when executing the callback:
The area object — You can
access properties of the area object from within
the callback function. You also can access the area object
through the CallbackObject
property of the root,
which can be queried using the gcbo
function.
Event data — This argument is empty for this
property. Replace it with the tilde character (~
)
in the function definition to indicate that this argument is not used.
For more information on how to use function handles to define callback functions, see Callback Definition.
Example: @myCallback
Example: {@myCallback,arg3}
DeleteFcn
— Deletion callback''
(default) | function handle | cell array | character vectorDeletion callback, specified as one of these values:
Function handle
Cell array containing a function handle and additional arguments
Character vector that is a valid MATLAB command or function, which is evaluated in the base workspace (not recommended)
Use this property to execute code when you delete the area. MATLAB executes the callback before destroying the area so that the callback can access its property values.
If you specify this callback using a function handle, then MATLAB passes two arguments to the callback function when executing the callback:
The area object — You can
access properties of the area object from within
the callback function. You also can access the area object
through the CallbackObject
property of the root,
which can be queried using the gcbo
function.
Event data — This argument is empty for this
property. Replace it with the tilde character (~
)
in the function definition to indicate that this argument is not used.
For more information on how to use function handles to define callback functions, see Callback Definition.
Example: @myCallback
Example: {@myCallback,arg3}
BeingDeleted
— Deletion status of area'off'
(default) | 'on'
This property is read only.
Deletion status of area, returned as 'off'
or 'on'
. MATLAB sets
the BeingDeleted
property to 'on'
when
the delete function of the area begins execution
(see the DeleteFcn
property). The BeingDeleted
property
remains set to 'on'
until the area no
longer exists.
Check the value of the BeingDeleted
property
to verify that the area is not about to be deleted
before querying or modifying it.