Sets the spatial reference system identifier (SRID) of a raster object. The SRID and its definition are stored in the spatial_ref_sys table.
Syntax
raster ST_SetSrid(raster rast, integer srid);Parameters
| Parameter | Description |
|---|---|
rast | The raster object. |
srid | The SRID to assign to the raster object. |
Usage notes
For raster objects stored in external mode, two conditions must be met before the update takes effect:
The raster object must be georeferenced.
The specified SRID must exist in the
spatial_ref_systable.
If either condition is not met, the raster object cannot be updated.
Example
update rast set rast=ST_SetSrid(rast,4326) where id=1;
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