Computes the world coordinates of a cell using an affine transformation formula based on the pixel coordinates and pyramid level of the cell.
Syntax
point ST_Rast2WorldCoord(raster raster_obj, integer pyramidLevel, integer row, integer column);
geometry ST_Rast2WorldCoord(raster raster_obj, integer pyramidLevel, geometry geom);Parameters
| Parameter | Description |
|---|---|
| raster_obj | The raster object. |
| pyramidLevel | The pyramid level. |
| row | The row number of the cell. |
| column | The column number of the cell. |
| geom | The geometry to convert. The x coordinate represents the column number in the raster, and the y coordinate represents the row number. |
Usage notes
The raster object must have a valid spatial reference system identifier (SRID).
Example
Select ST_Rast2WorldCoord(raster_obj, 0, 0, 0) from raster_table;该文章对您有帮助吗？