[postgis-users] Rasters in PostGIS

yoda2nd yoda2nd at niacc.org
Fri Apr 17 08:44:03 PDT 2009


Actually I saw that WKT Raster was avalible, but I was unsure about it 
with it only in the beta stages and there does not appear to be much in 
the way of documentation yet.  I did check out the read me file in the 
SVN repository, and it seems to conflict with the documentation. 

http://trac.osgeo.org/postgis/wiki/WKTRaster/Documentation01
https://svn.osgeo.org/postgis/spike/wktraster/README

The read me file says that it will not work with the current version of 
PostGIS, but the online documentation says it will.  Not sure which one 
is correct.



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I've done this before using a similar approach you have and using GDAL to
read the elevations from the GeoTiff and dump them into an elevations table
with point geoms.  If I had to do it again, now that we have WKT Raster in
the works, I'd probably try that if you don't mind compiling yourself.


http://trac.osgeo.org/postgis/wiki/WKTRaster

Mateusz has a nice test drive example of WKTRaster 

http://mateusz.loskot.net/2009/03/30/crunching-wkt-rasters/


Hope that helps,
Regina





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