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CREATE TABLE raster_world2raster (
rid integer,
rast raster
);
CREATE OR REPLACE FUNCTION make_test_raster(
rid integer,
width integer DEFAULT 2,
height integer DEFAULT 2,
ul_x double precision DEFAULT 0,
ul_y double precision DEFAULT 0,
skew_x double precision DEFAULT 0,
skew_y double precision DEFAULT 0,
initvalue double precision DEFAULT 1,
nodataval double precision DEFAULT 0
)
RETURNS void
AS $$
DECLARE
x int;
y int;
rast raster;
BEGIN
rast := ST_MakeEmptyRaster(width, height, ul_x, ul_y, 1, 1, skew_x, skew_y, 0);
rast := ST_AddBand(rast, 1, '8BUI', initvalue, nodataval);
INSERT INTO raster_world2raster VALUES (rid, rast);
RETURN;
END;
$$ LANGUAGE 'plpgsql';
-- no skew
SELECT make_test_raster(0, 4, 4, -2, -2);
SELECT make_test_raster(1, 2, 2, 0, 0, 0, 0, 2);
SELECT make_test_raster(2, 2, 2, 1, -1, 0, 0, 3);
SELECT make_test_raster(3, 2, 2, 1, 1, 0, 0, 4);
SELECT make_test_raster(4, 2, 2, 2, 2, 0, 0, 5);
-- skew
SELECT make_test_raster(10, 4, 4, -2, -2, 1, -1);
SELECT make_test_raster(11, 2, 2, 0, 0, 1, -1, 2);
SELECT make_test_raster(12, 2, 2, 1, -1, 1, -1, 3);
SELECT make_test_raster(13, 2, 2, 1, 1, 1, -1, 4);
SELECT make_test_raster(14, 2, 2, 2, 2, 1, -1, 5);
DROP FUNCTION make_test_raster(integer, integer, integer, double precision, double precision, double precision, double precision, double precision, double precision);
SELECT
rid,
(ST_WorldToRasterCoord(rast, -2, -2)).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, 0, 0)).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, 1, -1)).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, 1, 1)).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, 2, 2)).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, ST_MakePoint(-2, -2))).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, ST_MakePoint(0, 0))).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, ST_MakePoint(1, -1))).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, ST_MakePoint(1, 1))).*
FROM raster_world2raster;
SELECT
rid,
(ST_WorldToRasterCoord(rast, ST_MakePoint(2, 2))).*
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, -2, -2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 0, 0)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 1, -1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 1, 1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 2, 2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, ST_MakePoint(-2, -2))
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, -2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 0)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, 2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, -2, -2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 0, 0)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 1, -1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 1, 1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 2, 2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordX(rast, ST_MakePoint(-2, -2))
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, -2)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 0)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 1)
FROM raster_world2raster;
SELECT
rid,
ST_WorldToRasterCoordY(rast, 2)
FROM raster_world2raster;
DROP TABLE raster_world2raster;
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