Returns the Y skew (rotation parameter) of a raster object in its spatial reference system. The Y skew is part of the affine transformation matrix that defines the georeferencing of the raster. For background on how skew values relate to world files, see World file.
Prerequisites
The raster object must have a valid Spatial Reference Identifier (SRID).
Syntax
float8 ST_SkewY(raster raster_obj)Parameters
| Parameter | Description |
|---|---|
raster_obj | The raster object to query. |
Examples
SELECT ST_SkewX(rast) AS skewx,
ST_SkewY(rast) AS skewy
FROM raster_table;Sample output:
skewx | skewy
-------+-------
0.3 | 0.2What's next
ST_SkewX: returns the X skew of a raster object
ST_SetSkew: sets the skew values of a raster object