[postgis-users] Unable to build WKT Raster

[Gilles Bassière]

Mateusz Loskot wrote:
> The WKT Raster README file available from
> http://trac.osgeo.org/postgis/browser/spike/wktraster/README
> says
> 
> "latest 1.3.5 release won't work"
> 

I've seen this indeed but was confused by other sources of documentation.

In the meantime, I've managed to build PostGIS 1.4 and WKT raster
against it. It seems to work fine except that "make install" try to copy
gdal2wktraster.py directly to postgresql bin dir, ignoring the custom
prefix. Anyway, I copied the file manually and wktraster is now all set up.

I've been able to load an SRTM tile and fetch individual values using
st_value. What I'd like to do is to extract cells having "value > n" and
build a polygon from those. Is this the kind of query wkt raster is
intended to support?

Regards

-- 
Gilles Bassière - MAKINA CORPUS
http://www.makina-corpus.com