ST_GeoReference
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Name

ST_GeoReference — Returns the georeference meta data in GDAL or ESRI format as commonly seen in a world file. Default is GDAL.

Synopsis

text ST_GeoReference(raster rast, text format=GDAL);

Description

Returns the georeference meta data including carriage return in GDAL or ESRI format as commonly seen in a world file. Default is GDAL if no type specified. type is string 'GDAL' or 'ESRI'.

Difference between format representations is as follows:

GDAL:

Output
scalex
skewy
skewx
scaley
upperleftx
upperlefty

ESRI:

Output
scalex
skewy
skewx
scaley
upperleftx + scalex*0.5
upperlefty + scaley*0.5

Examples

Code
SELECT
    format,
    replace(ST_GeoReference(rast, format), E'\n', ' | ') AS georef
FROM dummy_rast
CROSS JOIN (VALUES ('ESRI'), ('GDAL')) AS formats(format)
WHERE rid = 1;
Output
 format | georef
--------+---------------------------------------------------------------------------
 ESRI   | 2.0000000000 | 0.0000000000 | 0.0000000000 | 3.0000000000 | 1.5000000000 | 2.0000000000
 GDAL   | 2.0000000000 | 0.0000000000 | 0.0000000000 | 3.0000000000 | 0.5000000000 | 0.5000000000
(2 rows)