PostGIS
Name
ST_Contains — Return true if no points of raster rastB lie in the exterior of raster rastA and at least one point of the interior of rastB lies in the interior of rastA.
Synopsis
+boolean +ST_Contains( raster rastA , integer nbandA
, raster rastB , integer nbandB );
+boolean +ST_Contains( raster rastA , raster rastB
);
Description
Raster rastA contains rastB if and only if no points of rastB lie in the exterior of rastA and at least one point of the interior of rastB lies in the interior of rastA. If the band number is not provided (or set to NULL), only the convex hull of the raster is considered in the test. If the band number is provided, only those pixels with value (not NODATA) are considered in the test.
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Availability: 2.1.0
Examples
-- specified band numbers
SELECT r1.rid, r2.rid, ST_Contains(r1.rast, 1, r2.rast, 1) FROM dummy_rast r1 CROSS JOIN dummy_rast r2 WHERE r1.rid = 1;
NOTICE: The first raster provided has no bands
rid | rid | st_contains
-----+-----+-------------
1 | 1 |
1 | 2 | f-- no band numbers specified
SELECT r1.rid, r2.rid, ST_Contains(r1.rast, r2.rast) FROM dummy_rast r1 CROSS JOIN dummy_rast r2 WHERE r1.rid = 1;
rid | rid | st_contains
-----+-----+-------------
1 | 1 | t
1 | 2 | f