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ishandle
Determines if values are valid graphics object handlesarray = ishandle(h)
array = ishandle(h)
returns an array that contains 1's where the elements of h are valid graphics handles and 0's where they are not.
Determine whether the handles previously returned by fill remain handles of existing graphical objects:
X = rand(4); Y = rand(4);
h = fill(X,Y,'blue')
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.
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delete(h(3))
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.
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ishandle(h)
ans =
1
1
0
1
findobj