This demonstrates my previous question(<http://www.mathworks.com/matlabcentral/answers/6749-graphic-ghost)>, now with real code.
There is a wrong behaviour when I mix 'fill' and 'image' on the same plot.
This is demonstrated by the following code.
clcclose allclear allaxis([-5 200 -5 200]);axis square;hold onfor pos=120:200 a=fill([10 10 0 0]+pos/2,[10 0 0 10]+pos/2,'r'); b=image([pos pos+40],[pos pos+40],rand(40)*100,'AlphaData',0.5*ones(40)); drawnow if ishandle(b) delete(a); delete(b); end end
In Matlab r2010b the random color image will disapear as soon as it touch the axis(plot border). I can see only a thin line on the edge of the image. If you comment the 'a=fill…' and 'delete(a)' lines, it will work as expected. I tried to generate a animated gif with this, but it showed another bug, that I had complained previously. If you look at http://geodac.di.ubi.pt/nuno/bug1.gif you will see the 'fill' moving without the 'image'. When I add the image, at http://geodac.di.ubi.pt/nuno/bug2.gif, everything freezes on the first position. That means frame = getframe(1); only gets the first frame after the image was inserted, and the transparency seems to have been applied to the entire image.
This bug only appears when 'AlphaData' is used. Opaque images work fine!
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