pggeodb.nancy.inra.fr/db_cefs - db_cefs on pggeodb.nancy.inra.fr

Function: st_worldtorastercoordx

Schema

public

Owner

postgres

Descriptions

args: rast, pt - Returns the column in the raster of the point geometry (pt) or a X and Y world coordinate (xw, yw) represented in world spatial reference system of raster.

Options

Definition

CREATE OR REPLACE FUNCTION public.st_worldtorastercoordx (
 rast public.raster,
 pt public.geometry
)
RETURNS integer AS
$span$
DECLARE
xr integer;
BEGIN
IF ( st_geometrytype(pt) != 'ST_Point' ) THEN
RAISE EXCEPTION 'Attempting to compute raster coordinate with a non-point geometry';
END IF;
IF ST_SRID(rast) != ST_SRID(pt) THEN
RAISE EXCEPTION 'Raster and geometry do not have the same SRID';
END IF;
SELECT columnx INTO xr FROM _st_worldtorastercoord($1, st_x(pt), st_y(pt));
RETURN xr;
END;
$span$
LANGUAGE 'plpgsql'
IMMUTABLE
RETURNS NULL ON NULL INPUT
SECURITY INVOKER
COST 100;

COMMENT ON FUNCTION public.st_worldtorastercoordx(rast public.raster, pt public.geometry)
IS 'args: rast, pt - Returns the column in the raster of the point geometry (pt) or a X and Y world coordinate (xw, yw) represented in world spatial reference system of raster.';

This file was generated with SQL Manager for PostgreSQL (www.pgsqlmanager.com) at 13/03/2014 13:23