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# A.10 sph: spherical triangulation and gridding

This package contains the main programs sphtriangulate, which you can use to generate data for Delaunay or Voronoi diagrams, sphdistance which calculates distances from lines to grid nodes using Voronoi decomposition of the data, and sphinterpolate which performs gridding under tension on a sphere. These programs passes the heavy work onto the two Fortran-77 packages SSRFPACK and STRIPACK by Robert Renka; here they have been translated to C with assistance from f2c. The package is maintained by Paul Wessel.

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