[GRASS-user] TIN algorithm

[Hamish]

Carlos wrote:
> I was just reading an interesting paper about the DEST algorithm to
> poduce TINS, and I was wondering how are TIN-related stuff in GRASS? I
> never needed, but.. it is possible? to generate a real TIN?

TINs are just xyz points joined together, e.g. with v.delaunay.
 http://www.ian-ko.com/resources/triangulated_irregular_network.htm


I had thought there was a script on the wiki add-ons page, but I don't
see it there now. (to do v.delaunay + v.distance to apply elevation
value to triangle centroid?) Maybe google could find it.


r.refine, again from Laura Toma's group:
  http://www.bowdoin.edu/~ltoma/research.html


TINs + GDAL:
 http://lists.maptools.org/pipermail/gdal-dev/2007-January/011633.html


also, in the GRASS 6 vector lib there is lib/vector/Vlib/tin.c. I don't
really know what it does, but d.what.vect calls it.


Hamish