every matrix has an x and y coordinates and the value, so it is like an image, a frame. I refresh this matrix with a for loop so now it is not saved anywhere. I mean, after the loop this matrix contains only the information about the last step of the for loop. at first I thought to save the matrix as txt file at every iteration but it is not a good idea. I would have a lot of txt files and I still don't have idea on how make a "movie".
yes, I mean that at time 0 i see the matrix at time zero, at time 1 i see the matrix at the next iteration