[postgis-users] Rasters in PostGIS

[Paragon Corporation]

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

 

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of yoda2nd
Sent: Thursday, April 16, 2009 6:06 PM
To: PostGIS User Group
Subject: [postgis-users] Rasters in PostGIS

Hello All,

I am working on a project where we need to be able to query a raster image
(i.e. GeoTiff) to obtain elevation information.  Basically, I need to be
able to import a rather large data set and be able to query it on demand and
export just the data I need at the time back into a raster format for
further processing (very similar to the USGS Seamless Data server).

I am thinking importing the raster data as individual points (x,y,z) in the
EWKT format is probably my best bet.

I am not totally sure I am on the right track here, so I am hoping someone
can let me know if I am going down the right track or nudge me back onto it.
So I just have a few basic questions:


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