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

Function: st_quantile

Schema

public

Owner

postgres

Descriptions

args: rast, nband, quantile - Compute quantiles for a raster or raster table coverage in the context of the sample or population. Thus, a value could be examined to be at the rasters 25%, 50%, 75% percentile.

Options

Definition

CREATE OR REPLACE FUNCTION public.st_quantile (
 rast public.raster,
 nband integer,
 quantile double precision
)
RETURNS double precision AS
$span$
SELECT (_st_quantile($1, $2, TRUE, 1, ARRAY[$3]::double precision[])).value
$span$
LANGUAGE 'sql'
IMMUTABLE
RETURNS NULL ON NULL INPUT
SECURITY INVOKER
COST 100;

COMMENT ON FUNCTION public.st_quantile(rast public.raster, nband integer, quantile double precision)
IS 'args: rast, nband, quantile - Compute quantiles for a raster or raster table coverage in the context of the sample or population. Thus, a value could be examined to be at the rasters 25%, 50%, 75% percentile.';

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