imagesc, replot, ImageMagick

I think this is a really simple question but for a
beginners like me, I don't even know where to start.

After using imagesc, ImageMagick window plots the
field potential. 
How do you replot a different field potential in the
same window? Everytime I use imagesc, I get a separate
window. Also, when you try to close the window, it
asks you if you want to save it or not. How do you get
rid of that?

I'm trying to loop imagesc in a function to get a
"movie" out of it. So right now, if I try to loop a
hundred frames, I get hundred different images. 

Is there a better way/function to plot a field
potential's intensity in 3d?

Thanks for any suggestions.

Tomy



		
_______________________________
Do you Yahoo!?
Express yourself with Y! Messenger! Free. Download now. 
http://messenger.yahoo.com