The gdal_grid tool supports IDW interpolation. I've used ths for CSV files to TIFs. Very recent versions of GDAL should be able to read/write to postgis rasters. Check out http://www.gdal.org/gdal_grid.html
Personally, I would love to have postgis do spatial interpolations. However, the last I checked into this, PostGIS does not really have any spatial interpolation methods (IDW, kriging, splines) built in. I saw some examples of people integrating R functions into postgres pl/sql: http://www.joeconway.com/plr/ - John *********************************************** John Callahan, Research Scientist Delaware Geological Survey, University of Delaware URL: http://www.dgs.udel.edu ************************************************* On Tue, Mar 27, 2012 at 11:20 PM, Blair Deaver <blairdea...@gmail.com>wrote: > Hello, > > I am trying to find out if PostGIS Raster supports the Inverse Distance > Weighted interpolation method via some function. I am specifically trying > to generate a heat map from a geometry table with point locations. Can > some one point me in the right direction? Thanks. > > Cheers, > Blair > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > >
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