PostGIS
Name
ST_GeoReference — Returns the georeference meta data in GDAL or ESRI format as commonly seen in a world file. Default is 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:
scalex
skewy
skewx
scaley
upperleftx
upperleftyESRI:
scalex
skewy
skewx
scaley
upperleftx + scalex*0.5
upperlefty + scaley*0.5Examples
SELECT ST_GeoReference(rast, 'ESRI') As esri_ref, ST_GeoReference(rast, 'GDAL') As gdal_ref
FROM dummy_rast WHERE rid=1;
esri_ref | gdal_ref
--------------+--------------
2.0000000000 | 2.0000000000
0.0000000000 : 0.0000000000
0.0000000000 : 0.0000000000
3.0000000000 : 3.0000000000
1.5000000000 : 0.5000000000
2.0000000000 : 0.5000000000