Saving Figure using saveas() function

2011 2 18
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Is there any way by which I can save the current figure?.

When I use saveas() function eg)saveas(gcf,'pred_prey.jpg') the current image in the figure gets saved but with a white background with my image centered in it.

I need only the image no need of the white background. How can I do that?

https://picasaweb.google.com/lh/photo/xxof9xl2tRBx0GttFdESBJOzMXS1UfqXPDW9N1lFu0w?feat=directlink

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Jan
Jan 2011-2-18
The link shows a picture, but it does not clear the difference of what you get and waht you want.

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Oliver Woodford
Oliver Woodford 2011-2-18

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The function export_fig (available on the File Exchange) will automatically crop the image for you. It will not change the background colour, nor will it resize the figure. It will save to jpeg with low compression/high quality by default.
Download it then try:
export_fig(gcf, 'pred_prey.jpg');

更多回答（2 个）

Jan
Jan 2011-2-18

2 个投票

You can use GETFRAME and IMWRITE instead:
AxesH = gca; % Not the GCF
F = getframe(AxesH);
imwrite(F.cdata, 'pred_prey.jpg');

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Niranjan
Niranjan 2011-2-18
it worked out fr a single image but not fr a series of dynamically varying images.Can you temme why it didn't work out?
Jan
Jan 2011-2-18
Please show exactly, what does not work. I guess a DRAWNOW or PAUSE(0.02) is needed to update the display before GETFRAME.

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Doug Hull
Doug Hull 2011-2-18

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If you have the image as a matrix that you used in IMSHOW, then IMWRITE directly on the matrix should work.

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