This function returns the maximum X-coordinate value of the specified raster object.

Syntax

float8 ST_XMax(raster raster_obj)
float8 ST_XMax(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

If the raster object has been georeferenced, this function returns the maximum X-coordinate value of the raster object. Otherwise, this function returns -1.

Examples

select ST_XMax(rast)
from raster_table;

 st_xmax  
----------
      121