Returns the minimum Y-coordinate value of a raster object.
Syntax
float8 ST_YMin(raster raster_obj)
float8 ST_YMin(raster raster_obj, integer pyramid)Parameters
| Parameter | Description |
|---|---|
raster_obj | The name of the raster object. |
pyramid | The pyramid level. The value starts from 0. |
Description
Returns the minimum Y-coordinate value of the spatial extent of the raster object.
If the raster object has not been georeferenced, this function returns 0.
Examples
Query the minimum Y-coordinate of a raster object:
SELECT ST_YMin(rast)
FROM raster_table;
st_ymin
----------
30