Help to make a GIF of my animation

Hello, I have a presentation this week and I need to make a GIF of my animation, because It takes to many time to run the code in the middle of the presentation and I would prefer to show an animation and aboid any mistake.

My code is giant, aprox 1800 lines of code, so I don't want to bother you with that. I think the clue to make my GIF is in the for that create my animation and the last part of the code:

for h=1:100 . . . imagesc(cancha);pause(0.001); end

cancha is my matrix, with lenght aprox 40x40 and only integer numbers (-inf, inf)

if someone can help me that would be great. Greetings! PS: I'm trying to modelate an cellular automaton, so the code is huge because of the rules.

[ferne17]

I solved this with an external program and the code result this:

for h=1:t .

.

.

G=imagesc(cancha);

pause(0.001);

hold on

Image = getframe;

P = frame2im(Image);

number = num2str(h);

extension = '.bmp';

filename = [number,extension];

imwrite(P,eval('filename'), 'bmp');

hold off

end (of the "for h")

With this you made "t" images "bmp", and after with this program: http://uwcem.ece.wisc.edu/downloadable/GaLE10.exe

Where you select the images bmp and press preview and you obtain a GIF. This probably wouldn´t be best way to do the GIF, but it's the only way I know. If someone knows another please tell me!