imshow differences in 2018a vs older version

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Phillip Miller 2018-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/425689-imshow-differences-in-2018a-vs-older-version

评论： Walter Roberson 2018-10-24

Okay,

So I'm migrating to 2018a, and have some problems with imshow working slightly differently. The code is essentially this:

while(hasFrame(video))
   h = figure; imshow(frameImage);
   hold on;
   % plot a ton of stuff ontop of the image
   hold off;
   % Process frame
end

In the older versions, I would get these beautiful figures with data superimposed on top of the image; In 2018a, I only get the image unless I hit a breakpoint, then the get my overlaid data to show up.

Is there any way to get this back?

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Phillip Miller 2018-10-24

That would do it. I never had to do that before. Thanks!

Walter Roberson 2018-10-24

Your code outline implies that you create a new figure for each frame. Each figure() call to create a new figure should trigger an update of all existing visible figures, so you would get the frames appearing with a lag of one frame. But it would be odd to create a new figure for each frame.

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