[postgis-users] raster intersecting geometry

[Amy O'Keefe]

Hi all,
could anyone help me with the below query?
I'm trying to find the geometries from a table (ch04.newpoint) which intersect the raster (ch04.dumprastval).

However I can't seem to get it to work!

Thanks.



SELECT
CAST((gval).val As integer) AS val,
ST_Union((gval).geom) As geom
FROM (
SELECT ST_Intersection(
ST_Clip(rast,ST_Envelope(buf.geom)),
1,
buf.geom
) As gval
FROM ch04.dumprastval
INNER JOIN (
SELECT ST_Buffer(
ST_GeomFromText(geom,4326) FROM ch04.newpoint
ON ST_Intersects(rast,geom)
) As foo
GROUP BY (gval).val
ORDER BY (gval).val;


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