Create a .gif from series of images created in a for loop

Question

David 2014-8-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/150972-create-a-gif-from-series-of-images-created-in-a-for-loop

回答： Image Analyst 2014-8-15

Hi,

So I have some working code that reads in some data files, does some manipulation on said data and creates an image file based up the results. I can save each image generated into a specified output file, yet I also wish to create a .gif, where each frame is the image that just got generated. The code I currently have seems to just not work, and only uses the 1st image created. My code is below.

Any help would be greately appriciated!

cd('........')
output_file='.......';
gif_name = 'test.gif';
for count = 0:50;
     %DATA MANIPULATION
         ..................
     %CREATE AND SAVE IMAGE 
      data_figure = figure('Visible','off');
      axes1 = axes('Parent', data_figure, 'ZGrid', 'on', 'YGrid', 'on');
      view(axes1,[0.5 90]);
      xlim(axes1,[-0.01 0.25]);
      hold(axes1, 'all');
      surf(data_A,data_B,data_C, 'Edgecolor', 'none');
      colorbar;
      xlabel('........');
      ylabel('.........');
      set(gca, 'XGrid', 'off');
      ylabel(colorbar, '.......');
      saveas(gcf, fullfile(output_file, [num2str(count),'.png']));
      %PART THAT DOESNT WORK....CREATING GIF
      frame = getframe(1);
      im = frame2im(frame);
      [AA,map] = rgb2ind(im,256);
      if count == 0,
      imwrite(AA,map,gif_name,'gif','LoopCount',Inf,'DelayTime',1);
    else
      imwrite(AA,map,gif_name,'gif','WriteMode','append','DelayTime',1);
      end
end

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David 2014-8-15

Ok I have gotten it to work by changing frame = getframe(1); to frame=getframe(data_figure);

yet it diplays each frame on screen as it is creating the file, how do I stop this?

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Answer 1

Image Analyst 2014-8-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/150972-create-a-gif-from-series-of-images-created-in-a-for-loop#answer_148770

getframe() pulls the image out of the axes. If you don't want it to be displayed, then you can't use getframe(). You'll have to create the image yourself somehow.