Saving multiple images from a plot which updates with each iteration of a loop

Question

Alexander 2013-1-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/59093-saving-multiple-images-from-a-plot-which-updates-with-each-iteration-of-a-loop

Hi,

I have a plot inside a loop which updates with each iteration of the loop. I would like to save each of the "updates" as a separate .gif (or similar) inorder to produce an animation that can be played outside of matlab.

At present I am using the following to save an image:

saveas(h,'filename.ext')

Cheers,

Alex

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Answer 1

Alexander 2013-1-17

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https://ww2.mathworks.cn/matlabcentral/answers/59093-saving-multiple-images-from-a-plot-which-updates-with-each-iteration-of-a-loop#answer_71509

Sorry just managed to solve this with:

filename=it; saveas(f3, num2str(it), 'png');

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Jesus 2013-2-10

hi Alexander... im new on this topic of image processing and i have a similar problem:

i need to load->process->save and finally dsisplay a number of images but i dont know how to do it the only thing i have its the loading part so if you could help me would be awesome.

thanks dude!!!

Alexander 2013-2-12

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Hi, sorry for the late reply didn't see your comment. Not sure if I will be much help but here goes...

I managed to solve my problem with:

saveas(f1, num2str(it), 'png');

where: f1=name of my figure, it was the loop iteration and png is the file type

I managed to produce animated gifs using:

 filename = 'test.gif';    
    frame = getframe(1);
    im = frame2im(frame);
    [imind,cm] = rgb2ind(im,256);
    if it == 1;
        imwrite(imind,cm,filename,'gif', 'Loopcount',inf,'DelayTime',0.1);
    else
        imwrite(imind,cm,filename,'gif','WriteMode','append','DelayTime',0.1);
    end