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

Function: st_dwithin

Schema

public

Owner

postgres

Descriptions

args: rastA, nbandA, rastB, nbandB, distance_of_srid - Return true if rasters rastA and rastB are within the specified distance of each other.

Options

Definition

CREATE OR REPLACE FUNCTION public.st_dwithin (
 rast1 public.raster,
 nband1 integer,
 rast2 public.raster,
 nband2 integer,
 distance double precision
)
RETURNS boolean AS
$span$
SELECT $1::geometry && ST_Expand(ST_ConvexHull($3), $5) AND $3::geometry && ST_Expand(ST_ConvexHull($1), $5) AND CASE WHEN $2 IS NULL OR $4 IS NULL THEN _st_dwithin(st_convexhull($1), st_convexhull($3), $5) ELSE _st_dwithin($1, $2, $3, $4, $5) END
$span$
LANGUAGE 'sql'
IMMUTABLE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 1000;

COMMENT ON FUNCTION public.st_dwithin(rast1 public.raster, nband1 integer, rast2 public.raster, nband2 integer, distance double precision)
IS 'args: rastA, nbandA, rastB, nbandB, distance_of_srid - Return true if rasters rastA and rastB are within the specified distance of each other.';

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