Nicolas ROUX wrote: > -2- Now with the code below I have strange result. > With w=h=400:
> With w=400 and h=300: > - Using "numpy.ogrid", => broadcast ERROR ! > > The last broadcast error is: > "ValueError: shape mismatch: objects cannot be broadcast to a single shape" This is probably a broadcasting error, which means your result with w=h is probably wrong. My advice: Always test with non-square arrays, to make sure you are broadcasting as you expect. Don't test with "zeros" or "ones" for your test data -- so you can look at the results and see if you are getting what you expect. I often use something like: a = numpy.arange(w*h).reshape((h,w)) I also test with very small dimensions so that I can easily print the results of each step as I develop the code With this approach you will probably figure out what's going on. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception chris.bar...@noaa.gov _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
