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

Function: st_makeemptyraster

Schema

public

Owner

postgres

Descriptions

args: rast - Returns an empty raster (having no bands) of given dimensions (width & height), upperleft X and Y, pixel size and rotation (scalex, scaley, skewx & skewy) and reference system (srid). If a raster is passed in, returns a new raster with the same size, alignment and SRID. If srid is left out, the spatial ref is set to unknown (0).

Options

Definition

CREATE OR REPLACE FUNCTION public.st_makeemptyraster (
 rast public.raster
)
RETURNS public.raster AS
$span$
DECLARE
w int;
h int;
ul_x double precision;
ul_y double precision;
scale_x double precision;
scale_y double precision;
skew_x double precision;
skew_y double precision;
sr_id int;
BEGIN
SELECT width, height, upperleftx, upperlefty, scalex, scaley, skewx, skewy, srid INTO w, h, ul_x, ul_y, scale_x, scale_y, skew_x, skew_y, sr_id FROM ST_Metadata(rast);
RETURN st_makeemptyraster(w, h, ul_x, ul_y, scale_x, scale_y, skew_x, skew_y, sr_id);
END;
$span$
LANGUAGE 'plpgsql'
IMMUTABLE
RETURNS NULL ON NULL INPUT
SECURITY INVOKER
COST 100;

COMMENT ON FUNCTION public.st_makeemptyraster(rast public.raster)
IS 'args: rast - Returns an empty raster (having no bands) of given dimensions (width & height), upperleft X and Y, pixel size and rotation (scalex, scaley, skewx & skewy) and reference system (srid). If a raster is passed in, returns a new raster with the same size, alignment and SRID. If srid is left out, the spatial ref is set to unknown (0).';

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