animatedgif.m

matlab program for GIF

%% How to make an animated GIF
% This example animates the vibration of a membrane, captures a series of
% screen shots, and saves the animation as a GIF image file.
%%
% <<../DancingPeaks.gif>>
%%
% The resulted animated GIF was embedded in this HTML page using the Image
% cell markup (see 
% <http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_env/f6-30186.html#breug1i help for markup formatting>). 
%%
% Here's the M code.
Z = peaks; 
surf(Z)
axis tight
set(gca,'nextplot','replacechildren','visible','off')
f = getframe;
[im,map] = rgb2ind(f.cdata,256,'nodither');
im(1,1,1,20) = 0;
for k = 1:20 
  surf(cos(2*pi*k/20)*Z,Z)
  f = getframe;
  im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
end
imwrite(im,map,'DancingPeaks.gif','DelayTime',0,'LoopCount',inf) %g443800
%%
% For more details about GIF settings |DelayTime| and |LoopCount| for desired
% effect see the 
% <http://www.mathworks.com/access/helpdesk/help/techdoc/ref/imwrite.html#f25-752355 help for |imwrite/gif|>.