Some non-STCL software that might be of interest.

The PROJ.4 Cartographic Projections library now contains the ISEA projection and aperture 3 and 4 hexagon binning with DGGRID address types (thanks to Nathan Wagner).

The PROJ.4 Cartographic Projections library now contains the ISEA projection and aperture 3 and 4 hexagon binning with DGGRID address types (thanks to Nathan Wagner).

Spherekit is an integrated toolkit for spatial interpolation and comparison of spatial interpolation algorithms.

Spherekit is an integrated toolkit for spatial interpolation and comparison of spatial interpolation algorithms.