ishghandle

True for graphics object handles

Syntax

ishghandle(h)

Description

ishghandle(h) returns an array that contains 1's where the elements of h are handles to existing graphics objects and 0's where they are not. Differs from ishandle in that Simulink^® objects handles return false.

Examples

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Test for Valid Graphics Object Handle

Open Live Script

Create a plot. Test if the output p is a valid graphics object handle.

x = 1:10;
y = 1:10;
p = plot(x,y);

Figure contains an axes object. The axes object contains an object of type line.

ishghandle(p)

ans = logical
   1

Version History

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R2024b: Passing multidimensional array as input returns output of same size

Passing an array that has three or more dimensions as input returns an array of the same size. Previously, ishghandle returned a 2-D array when the input had three or more dimensions. The higher dimensions were collapsed into the second dimension. For example, if the input was a 2-by-4-by-5 array, the output was a 2-by-20 array.

If you pass a scalar, 1-D, or 2-D array to either function, the output is the same size as in previous releases.

If you use nested calls to the all or any function, update your code to use the "all" argument instead of the nested function call to preserve the shape of the output.

For example, this code returns a scalar logical value in R2024a. In R2024b, it returns a 1-by-1-by-4 array of logical values.

h = gobjects(2,3,4);
all(all(ishghandle(h)))

To preserve the scalar output, call the all function once with the "all" argument. The result is a scalar logical value.

h = gobjects(2,3,4);
all(ishghandle(h),"all")