[postgis-users] Has anyone considered interpolation of sparse point networks?

Gerry Creager n5jxs gerry.creager at tamu.edu
Thu Mar 17 10:55:35 PST 2005

<sound of slapping head with board>
I should have thought about that.  GMT's got all the tools directly.

Thanks, Brent.


Brent Wood wrote:
> If you have a look at GMT (Generic Mapping Tools) there are tools there to work
> with point datasets & use triangulation or other gridding approaches to
> building DEM's from the points. 
> GRASS can also do this but I have found GMT to be easier and faster. GRASS &
> GDAL support GMT gridfiles, so once built, there are Open Source options for
> importing, exporting or reformatting the DEM's.
> http://gmt.soest.hawaii.edu
> I have used GMT to build circumpolar (South Pole) depth contours from global
> data, which are now part of a PostGIS Antarctic GIS supporting our research in
> the region. I've also gridded scattered elevation data for New Zealand to
> generate hillshaded geotiffs to use as backgrounds for displaying vector topo
> data.
> Brent Wood
> Brent Wood
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Gerry Creager -- gerry.creager at tamu.edu
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