ST_WorldToRasterCoordX
Prev | 12.4. Raster Accessors | Next

## Name

ST_WorldToRasterCoordX — Returns the column 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_WorldToRasterCoordX(`raster rast, geometry pt`)`;

`integer ST_WorldToRasterCoordX(`raster rast, double precision xw`)`;

`integer ST_WorldToRasterCoordX(`raster rast, double precision xw, double precision yw`)`;

## Description

Returns the column 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_World2RasterCoordX

## Examples

    SELECT rid, ST_WorldToRasterCoordX(rast,3427927.8) As xcoord,
            ST_WorldToRasterCoordX(rast,3427927.8,20.5) As xcoord_xwyw,
            ST_WorldToRasterCoordX(rast,ST_GeomFromText('POINT(3427927.8 20.5)',ST_SRID(rast))) As ptxcoord
    FROM dummy_rast;

     rid | xcoord  |  xcoord_xwyw   | ptxcoord
    -----+---------+---------+----------
       1 | 1713964 | 1713964 |  1713964
       2 |       1 |       1 |        1

## See Also

ST_RasterToWorldCoordX, ST_RasterToWorldCoordY, ST_SRID

Prev | Up | Next
ST_WorldToRasterCoord | Home | ST_WorldToRasterCoordY