>>>>> "Robert" == Robert Kern <rk...@uc...> writes: Robert> In any case, natgrid isn't Delaunay triangulation, but Robert> natural neighbors interpolation which is better (and Robert> probably state of the art for these kinds of graphics). It Robert> might be easiest to contact Dave Watson and ask if we can Robert> distribute his code in matplotlib under matplotlib's Robert> license. I can't find any contact information for him, Robert> however. I'm all for this but am not optimistic. It's my understanding that the NCAR folks are under a fairly heavy legal burden. Jeff: could you spearhead this effort and see if there is any interest on their part in relicensing their griddata code under a more permissive license? JDH