There's Renka's STRIPACK, and TRIPACK, respectively, ACM TOMS Algorithms
772 and 751, and there's the R package "deldir" which does the Delaunay
for a plane, but does anyone have or know of the tessellation in R for a
sphere?

Also, is there a standard indexing scheme for Delaunay facets, and
perhaps of edges in such facets?  I'd expect that to be a publication
reference, or even textbook.

TIA,

 - Jan




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