Hi Fredrik the array was created by reading in values from a ascii file.
also, I've implemented the suggestions, but nothing has worked to date. And yes, I have enough memory for one iteration. The app usually runs out of memory around the 12th iteration. Also, I can send a working version of the app, and the two associated ascii files, if anyone is interested. -Sonja Fredrik Lundh wrote: > sonjaa wrote: > > > "y" is a 500x500 array. > > a 500x500 array of what ? how did you create the array ? > > </F> -- http://mail.python.org/mailman/listinfo/python-list