Dynamically write images in different names?

Hello all, I've got a small problem. I want to write a image file for every iteration but in different names. The condition is explained below

for i=1:n

imwrite(x:x+h,y:y+w,'file01.jpg');

end I want to save the file name as file01.jpg,file02.jpg and so on.The name must dynamically vary with each iteration .How can I do that?? Any help?

Answer 1

[Jan]

Beside the NUM2STR suggested in the FAQ, SPRINTF is fine also:

for i=1:n
  imwrite(x:x+h,y:y+w, sprintf('file%.02d.jpg', i));
end

It is suggested in general to read the FAQ and the Getting Started chapters in the documentation before asking here.

Answer 2

[David Young]

See "How can I process a sequence of files?" at http://matlab.wikia.com/wiki/FAQ