Name
ST_TPI — Returns a raster with the calculated Topographic Position Index.
Synopsis
raster ST_TPI(raster rast, integer nband, raster customextent, text pixeltype="32BF" , boolean interpolate_nodata=FALSE );
Descripción
Calculates the Topographic Position Index, which is defined as the focal mean with radius of one minus the center cell.
![[Note]](../images/note.png)
|
|
|
This function only supports a focalmean radius of one. |
Disponibilidad: 2.1.0
Ejemplos
-- needs examples
Ver también
ST_MapAlgebra (callback function version), ST_TRI, ST_Roughness, ST_Slope, ST_HillShade, ST_Aspect