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

Function: st_nearestvalue

Schema

public

Owner

postgres

Descriptions

args: rast, bandnum, columnx, rowy, exclude_nodata_value=true - Returns the nearest non-NODATA value of a given bands pixel specified by a columnx and rowy or a geometric point expressed in the same spatial reference coordinate system as the raster.

Options

Definition

CREATE OR REPLACE FUNCTION public.st_nearestvalue (
 rast public.raster,
 band integer,
 columnx integer,
 rowy integer,
 exclude_nodata_value boolean = true
)
RETURNS double precision AS
$span$
SELECT st_nearestvalue($1, $2, st_setsrid(st_makepoint(st_rastertoworldcoordx($1, $3, $4), st_rastertoworldcoordy($1, $3, $4)), st_srid($1)), $5)
$span$
LANGUAGE 'sql'
IMMUTABLE
RETURNS NULL ON NULL INPUT
SECURITY INVOKER
COST 100;

COMMENT ON FUNCTION public.st_nearestvalue(rast public.raster, band integer, columnx integer, rowy integer, exclude_nodata_value boolean)
IS 'args: rast, bandnum, columnx, rowy, exclude_nodata_value=true - Returns the nearest non-NODATA value of a given bands pixel specified by a columnx and rowy or a geometric point expressed in the same spatial reference coordinate system as the raster.';

This file was generated with SQL Manager for PostgreSQL (www.pgsqlmanager.com) at 26/02/2014 11:51