2010/7/17 Robert Kern <robert.k...@gmail.com>: > On Sat, Jul 17, 2010 at 13:11, Friedrich Romstedt > <friedrichromst...@gmail.com> wrote: >> 2010/7/14 Ionut Sandric <sandricio...@yahoo.com>: >> I'm afraid also Zach does not understand what you are talking about >> ... So my first question (please bear with me) would be: What's a dem? > > Digital Elevation Map. > >> (n/a in my dictionary) And sorry for the cross-talk on the other >> first post by you ... >> >> And by slope gradient you mean second derivative? > > No, the first derivative. "Slope gradient" is a reasonably common, > albeit somewhat redundant, idiom meaning the gradient of an elevation > map.
Thanks Robert, that clarifies a lot. But still I don't understand how the crosstabulation shall work. What are the "classes"? Friedrich _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
