[postgis-users] ST_Intersection Raster error

Sandro Santilli strk at keybit.net
Tue Oct 11 23:29:00 PDT 2011

On Tue, Oct 11, 2011 at 06:59:27PM -0600, joel brown wrote:
> Hi all, I am just starting to experiment with postgis 2.0 and its raster
> support.   When I run the following query:
> select st_intersection(r.rast, v.geom)
> from ned r, test_line v
> where st_intersects(r.rast, v.geom)
> I get this error:
> ERROR:  lower bound of FOR loop cannot be null
> CONTEXT:  PL/pgSQL function "_st_intersects" line 103 at FOR with integer
> loop variable
> PL/pgSQL function "st_intersection" line 4 at assignment
> SQL function "st_intersection" statement 1
> My build is SVN revision 7959.  The ned table consists of about 1800 100x100
> tiles.  The test_line table contains one record with a linestring geometry.
>  Both the tiles and the linestring are in the same projection (EPSG 4326).
> Does anyone have any insights into what might be going on here?

It's a bug, it will help if you file it on http://trac.osgeo.org/postgis
(raster category)


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