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

Function: st_mean4ma

Schema

public

Owner

postgres

Descriptions

There is no description for function st_mean4ma

Options

Definition

CREATE OR REPLACE FUNCTION public.st_mean4ma (
 matrix double precision [],
 nodatamode text,
 variadic args text []
)
RETURNS double precision AS
$span$
   DECLARE
       _matrix float[][];
       sum float;
       count float;
   BEGIN
       _matrix := matrix;
       sum := 0;
       count := 0;
       FOR x in array_lower(matrix, 1)..array_upper(matrix, 1) LOOP
           FOR y in array_lower(matrix, 2)..array_upper(matrix, 2) LOOP
               IF _matrix[x][y] IS NULL THEN
                   IF nodatamode = 'ignore' THEN
                       _matrix[x][y] := 0;
                   ELSE
                       _matrix[x][y] := nodatamode::float;
                       count := count + 1;
                   END IF;
               ELSE
                   count := count + 1;
               END IF;
               sum := sum + _matrix[x][y];
           END LOOP;
       END LOOP;
       IF count = 0 THEN
           RETURN NULL;
       END IF;
       RETURN sum / count;
   END;
$span$
LANGUAGE 'plpgsql'
IMMUTABLE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 100;

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