PostGIS
Name
ST_WorldToRasterCoordY — Returns the row in the raster of the point geometry (pt) or a X and Y world coordinate (xw, yw) represented in world spatial reference system of raster.
Synopsis
integer +`*`+ST_WorldToRasterCoordY*(`raster `rast, geometry
pt`)`;
integer +`*`+ST_WorldToRasterCoordY*(`raster `rast, double
precision xw`)`;
integer +`*`+ST_WorldToRasterCoordY*(`raster `rast, double
precision xw, double precision yw`)`;
Description
Returns the row in the raster of the point geometry (pt) or a X and Y world coordinate (xw, yw). A point, or (both xw and yw world coordinates are required if a raster is skewed). If a raster is not skewed then xw is sufficient. World coordinates are in the spatial reference coordinate system of the raster.
Changed: 2.1.0 In prior versions, this was called ST_World2RasterCoordY
Examples
SELECT rid, ST_WorldToRasterCoordY(rast,20.5) As ycoord,
ST_WorldToRasterCoordY(rast,3427927.8,20.5) As ycoord_xwyw,
ST_WorldToRasterCoordY(rast,ST_GeomFromText('POINT(3427927.8 20.5)',ST_SRID(rast))) As ptycoord
FROM dummy_rast;
rid | ycoord | ycoord_xwyw | ptycoord
-----+-----------+-------------+-----------
1 | 7 | 7 | 7
2 | 115864471 | 115864471 | 115864471