I'm trying to write a program using App Designer that will read a PNG file, display it on a app.UIAxes, and then draw a rectangle on the image. The code looks like this:
39 ax=app.UIAxes;40 image(ax,app.data);41 rr=drawrectangle(ax,'Position',[100,157,11,54]);
Line 40 displays the image on the correct axes. Line 41 throws the errors below.
So what's the difference bewteen app.UIAxes (above) and "a valid Axes object" (below)?
Error using images.roi.internal.ROI/parseInputsROI parent must be a valid Axes object.Error in images.roi.RectangleError in drawrectangle (line 178)h = images.roi.Rectangle(varargin{:});Error in app1/ShowAnimation (line 41) rr=drawrectangle(ax,'Position',[100,157,11,54]);
If I pop up a separate figure, similar code works fine.
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