I just added the orthographic projection to the basemap toolkit - you can now make really nifty pseudo-satellite views of global data.
Here's an example:
This was generated using pcolor by the plotmap_ortho.py example script now in CVS. It requires the pcolor masked-array patch I sent to the matplotlib-devel list this morning. For some reason, pylab.contour goes berserk when you try to contour data on this projection - I;m still working on that.
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