How to save spectrogram?

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Sania Gul 2022-8-21

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https://ww2.mathworks.cn/matlabcentral/answers/1782655-how-to-save-spectrogram

评论： Rik 2022-8-22

Kindly tell me, how I can save the spectrogram without any labels, ticks or surrounding frame area as a JPEG image in my hard drive?

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Sania Gul 2022-8-21

编辑：Sania Gul 2022-8-21

Method # 2 of

https://www.mathworks.com/matlabcentral/answers/676373-how-to-extract-a-part-of-the-spectrogram

and

saveas(gcf,'filename.png')

Although the above link was for part of spectrogram, but I applied it for the full spectrogram.

But it is saving the x and yaxis along with numbers over them and the frame itself.

Sania Gul 2022-8-21

I have also tried this, but same results.

https://www.mathworks.com/matlabcentral/answers/418111-how-to-save-spectrogram-of-signal-as-image

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采纳的回答

Rik 2022-8-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1782655-how-to-save-spectrogram#answer_1029985

You can do the work yourself (as the axes contains a Position property from which you can determine what you need to crop), but the export_fig function from Yair Altman is probably what you need.

It should be able to export a screenshot of only the axes itself.

Otherwise, you could try digging in the properties to see if there is a CData property you could export directly (which would be the raw underlying data).