[postgis-devel] [wktraster] Changing the return value of st_value(rast, x, y)
Pierre Racine
Pierre.Racine at sbf.ulaval.ca
Wed Jun 2 12:43:46 PDT 2010
Hi,
I think it would be a good idea to change the behavior of st_value(rast, x, y) when the x and y are outside the raster limits. Now it return an error. I think it should instead return a NULL value so that a query does not fail if 1 points on 1000 is outside the raster area.
e.g.
SELECT pointid, rid, st_value(rast, geom) AS rastval
FROM myraster, mypointlayer;
I'll do it if I get no objections.
Pierre
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