Neel Smith: My current "GIS" of choice is R (!), partly because I'm interested in the possibilities of integrating analysis and expository narrative. A scriptable, reproducibly analysis using the (increasingly potent) spatial packages in R opens up some interesting possibilities.

Neel Smith: I'm looking at implementing Ptolemy's two global projections. I've finally (after nearly 15 years!) conquered Ptolemy's **Geography**. I can show that Ptolemy generated his spherical coordinates from ground distance/orientation data, and because there are interesting parallel between the way he does that and the ways he discusses **drawing** the projected data, it would be interesting to analyze his data spatially in terms of his coordinate systems. I'd love to do things like use an RSpatialPolygon to find the area of a polygon in his second projection.

His descriptions are in book 1 are good, the first projection is easy, the second projection is hard but Neugebauer anlayzed it mathematically and I have a mathematician colleague who may be enough of a genius to make it intelligible to me. If that happened, it would only be a SMP, if I knew how to deal with proj4 source.