Save figure as seen on screen?

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C
C 2013-1-25
编辑： Martim Zurita 2021-10-21
I would like to save a figure to png format exactly the same as seen on the screen. I searched the web and found:
set(gcf,'PaperPositionMode','auto'); saveas(gcf,[Filename '.png']);
that supposed to save the figure the same size, but it actually changed the size from 1200x600 to 1875x938, huh?
I also tried setting ‘PaperPosition’ and got the same size 1200x600, but the fonts in the saved figure became much larger compared to on screen and covered up parts of the graph.
If I use the "save" button in the figure window then it saves the figure as seen on the screen without a problem, but I would like to be able to do it programmatically if possible.
Please help. Thanks!

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回答（2 个）

Jan
Jan 2013-1-25
img = getframe(gcf);
imwrite(img.cdata, [FileName, '.png']);
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Jan
Jan 2021-10-2
imwrite cannot write eps files. The EPS format is thought for vector graphics, which can be scaled freely. Therefore it is not suitable for saving a figure "as seen on the screen". A raster image like TIFF, PNG or GIF would be matching.
If you use print() to create an EPS of the screenshot taken by getframe, a JPEG image is embedded in the EPS (or maybe a TIFF?). This indirect approach is less usefull than storing a raster image directly.
Martim Zurita
Martim Zurita 2021-10-21
编辑：Martim Zurita 2021-10-21
Thanks for the explanation, Jan!
In the end I managed to save my figure as seen on screen as a .pdf, using the export_fig function and the code
export_fig test.pdf

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John Petersen
John Petersen 2013-1-25
It's the same ratio at least. You may want to look at using export_fig() which you can download from the file exchange. This will preserve the figure size.

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