Description

Returns a raster from a supported GDAL raster file. gdaldata is of type bytea and should be the contents of the GDAL raster file.

If srid is NULL, the function will try to autmatically assign the SRID from the GDAL raster. If srid is provided, the value provided will override any automatically assigned SRID.

Availability: 2.1.0

Examples

WITH foo AS (
	SELECT ST_AsPNG(ST_AddBand(ST_AddBand(ST_AddBand(ST_MakeEmptyRaster(2, 2, 0, 0, 0.1, -0.1, 0, 0, 4326), 1, '8BUI', 1, 0), 2, '8BUI', 2, 0), 3, '8BUI', 3, 0)) AS png
),
bar AS (
	SELECT 1 AS rid, ST_FromGDALRaster(png) AS rast FROM foo
	UNION ALL
	SELECT 2 AS rid, ST_FromGDALRaster(png, 3310) AS rast FROM foo
)
SELECT
	rid,
	ST_Metadata(rast) AS metadata,
	ST_SummaryStats(rast, 1) AS stats1,
	ST_SummaryStats(rast, 2) AS stats2,
	ST_SummaryStats(rast, 3) AS stats3
FROM bar
ORDER BY rid;

 rid |         metadata          |    stats1     |    stats2     |     stats3     
-----+---------------------------+---------------+---------------+----------------
   1 | (0,0,2,2,1,-1,0,0,0,3)    | (4,4,1,0,1,1) | (4,8,2,0,2,2) | (4,12,3,0,3,3)
   2 | (0,0,2,2,1,-1,0,0,3310,3) | (4,4,1,0,1,1) | (4,8,2,0,2,2) | (4,12,3,0,3,3)
(2 rows)
				

See Also

ST_AsGDALRaster