MATLAB: Adding subplots to animated gif file

animationgifloopplotsubplot

Hi all,
I have the following code to create a gif from my data plots and I would like to do this with subplots for other parameters. The code is a bit messy but I am not sure how to work the handles for the subplots to have the playback synchronized for each plot:
DATASET1 = tower_pres_allyrs(1:100,1);
DATASET2 = tower_pres_allyrs(1:100,2);
h = plot(NaN,NaN); 
axis([min(DATASET1) max(DATASET1) min(DATASET2) max(DATASET2)]); 
for ii = 1:length(DATASET1)
    pause(0.1)
    set(h, 'XData', DATASET1(1:ii), 'YData', DATASET2(1:ii));
    drawnow 
    frame = getframe(1);
    im = frame2im(frame);
    [imind,cm] = rgb2ind(im,256);
    if ii == 1;
      imwrite(imind,cm,'filename.gif','gif','Loopcount',inf,'DelayTime',0.01);
    else
      imwrite(imind,cm,'filename.gif','gif','WriteMode','append','DelayTime',0.01);
    end
end
Thanks!

Best Answer

Masao - what do you mean by I would like to do this with subplots for other parameters? As your above code doesn't reference subplots, how are you currently using subplots?
If hSubPlotAxes is the handle to the axes of any subplot, then your above code could become
 h = plot(hSubPlotAxes,NaN,NaN); 
 axis(hSubPlotAxes,[min(DATASET1) max(DATASET1) min(DATASET2) max(DATASET2)]); 
 for ii = 1:length(DATASET1)
    pause(0.1)
    set(h, 'XData', DATASET1(1:ii), 'YData', DATASET2(1:ii));
    drawnow 
    frame = getframe(hSubPlotAxes);
    im = frame2im(frame);
    [imind,cm] = rgb2ind(im,256);
    if ii == 1;
      imwrite(imind,cm,'filename.gif','gif','Loopcount',inf,'DelayTime',0.01);
    else
      imwrite(imind,cm,'filename.gif','gif','WriteMode','append','DelayTime',0.01);
    end
end
So we just use the handle to the subplot axes for whenever we wish to plot, set the axis limits, or getframe. You could the above code in a function and just pass the data, handle, and filename, so as to re-use the same code for each subplot.
EDIT
The line to call getframe has been updated to remove the second parameter.
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