Schema
Owner
postgres
Descriptions
args: rast, band, x, y, exclude_nodata_value=true - Returns the value of a given band in a given columnx, rowy pixel or at a particular geometric point. Band numbers start at 1 and assumed to be 1 if not specified. If exclude_nodata_value is set to false, then all pixels include nodata pixels are considered to intersect and return value. If exclude_nodata_value is not passed in then reads it from metadata of raster.
Options
Option | Value |
---|---|
Returns |
double precision |
Language |
c |
Parameters |
rast public.raster band integer x integer y integer exclude_nodata_value boolean = true |
Definition
CREATE OR REPLACE FUNCTION public.st_value (
rast public.raster,
band integer,
x integer,
y integer,
exclude_nodata_value boolean = true
)
RETURNS double precision AS
'$libdir/rtpostgis-2.3', 'RASTER_getPixelValue'
LANGUAGE 'c'
IMMUTABLE
RETURNS NULL ON NULL INPUT
SECURITY INVOKER
COST 1;
COMMENT ON FUNCTION public.st_value(rast public.raster, band integer, x integer, y integer, exclude_nodata_value boolean)
IS 'args: rast, band, x, y, exclude_nodata_value=true - Returns the value of a given band in a given columnx, rowy pixel or at a particular geometric point. Band numbers start at 1 and assumed to be 1 if not specified. If exclude_nodata_value is set to false, then all pixels include nodata pixels are considered to intersect and return value. If exclude_nodata_value is not passed in then reads it from metadata of raster.';
This file was generated with SQL Manager for PostgreSQL (www.pgsqlmanager.com) at 13/03/2014 13:23 |