Make movie from imagesc

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numnum 2017-12-17

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https://ww2.mathworks.cn/matlabcentral/answers/373416-make-movie-from-imagesc

评论： numnum 2017-12-17

I have the following image:

t = 0:.1:10;
y4 = zeros(10,length(t));
x = zeros(size(t));
for k = 1:2:19999
   f(k)=k;
   x = x + sin(k*t)/k;
   y4((k+1)/2,:) = x;
end
y5=x-sin(t);
img2=imagesc(y5+1);
colormap('gray') ;

I would like to generate a movie to have the function moving on the x axis. I have tried im2frame which yields this error:

Error using im2frame
Can only make movie frames from image matrices of type double or uint8
F(1) = im2frame(img2);
Any help would be greatly appreciated!