All Products
Search
Document Center

PolarDB:ST_YMin

Last Updated:Jan 04, 2026

Returns the minimum Y-coordinate of a raster object.

Syntax

float8 ST_YMin(raster raster_obj)

Parameters

Parameter Name Description
raster_obj The raster object.

Description

If the raster object is georeferenced, this function returns the minimum Y-coordinate. Otherwise, it returns 0.

Example

select ST_YMin(rast)
from raster_table;

 st_ymin  
----------
      30