Hi
I'm new to PostGIS so please bear with me.
I'm working with MODIS data that I tiled using the auto tile switch in
raster2pgsql resulting in 13250 82x94 tiles.
When I try to query for pixel values using ST_Value, such as:
SELECT
ST_Value(rast, 2, 1,1) -- multiband raster
FROM
MODIS_test;
I get a value for each tile, not for each pixel (I assume the value is for the
first pixel in the tile?).
If I want to query each pixel do I need to loop through each tile and have a
sub loop for each pixel in that tile? If so I can't figure out the syntax to
designate the tiles vs pixels.
Thanks very much,
Carl
_______________________________________________
postgis-users mailing list
[email protected]
http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
