Why drawnow ; is given after imshow in matlab?

Why drawnow ; is given after imshow in matlab?

Answer 1

[Honglei Chen]

This is used to flush the graphic queue so you can see the change on screen. This is often used in animation so you can see the graph change during a loop. Otherwise, the program may accumulate the queue and flush it at the end of loop and you don't see the animation effect.

[D Joseph]

Thanks@Chen