Exportgraphics does only export black images from UIAxes

Question

Adrian 2024-1-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2073651-exportgraphics-does-only-export-black-images-from-uiaxes

回答： Adrian 2024-1-25

采纳的回答： Adrian

在 MATLAB Online 中打开

Hello.

I've been working on an app and I want to export the content of some UIAxes. This results only in black images.

To explain further:

plot(gca, rand(1, 100))
exportgraphics(gca, 'kajsdfgh.png')

gives what expected, a random plot. But

fig = uiaxes;
plot(fig, rand(1, 100))
exportgraphics(fig, 'ydklfg.png')

only returns a black image.

I'm using R2023b and I've been using this approach since some time, so it should work. Has there been a change in the default settings for UIAxes or exportgraphics or what is going on?

Thanks in Advance.

Edit: With further testing I realized, that it's not the exportgraphics with the problem, but the plot is just not happening.

Edit2: I've updated to Update 6 and the problem still persists.

Edit3: It works as expected on R2022a, on the same PC.

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Adrian 2024-1-25

I've retried the same code on another machine with Matlab R2023b Update 3, and it works again as expected.

That leads me to believe, there are some weird issues or settings on my main PC.

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Answer 1

Adrian 2024-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/2073651-exportgraphics-does-only-export-black-images-from-uiaxes#answer_1397336

It was an issue with OpenGL. Adding -nosoftwareopengl to the Startup solved the issue.

Dear Matlab: rendererinfo did not complete, hence it is not a substitute for the deprecated opengl info.

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Answer 2

Anton Kogios 2024-1-24

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2073651-exportgraphics-does-only-export-black-images-from-uiaxes#answer_1396361

编辑：Anton Kogios 2024-1-24

在 MATLAB Online 中打开

ydklfg.png

When I run this code (from the command window), it all works fine (Windows 10, MATLAB R2023b Update 6). See attached image for result.

fig = uiaxes;
plot(fig, rand(1, 100))
exportgraphics(fig, 'ydklfg.png')

I know this is fairly obvious, but maybe trying restarting and/or updating both your OS and MATLAB.

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Adrian 2024-1-24

I've updated to Update 6 and the problem still persists.

Anton Kogios 2024-1-24

Hi Adrian, thanks for updating and testing further. I would say to double check your UIAxes settings, but it's interesting that's it's working fine on R2022a for you...

I made a very simple app (attached) to try replicate your situation and it all works fine, maybe have a go at running it yourself.

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