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<H1><A NAME="SECTION0018100000000000000000">
A.10 sph: spherical triangulation and gridding</A>
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This package contains the main programs <A NAME="tex2html1678"
  HREF="../man/sphtriangulate.html"><I><B>sphtriangulate</B></I></A><A NAME="28884"></A>,
which you can use to generate data for Delaunay or Voronoi diagrams, 
<A NAME="tex2html1679"
  HREF="../man/sphdistance.html"><I><B>sphdistance</B></I></A><A NAME="28889"></A> which calculates distances from lines to grid
nodes using Voronoi decomposition of the data, and
<A NAME="tex2html1680"
  HREF="../man/sphinterpolate.html"><I><B>sphinterpolate</B></I></A><A NAME="28894"></A> 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 <I>f2c</I><A NAME="28898"></A>.
The package is maintained by Paul Wessel.

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<ADDRESS>
Paul Wessel
2011-02-27
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