Navigation :

ST_TRI

ST_TRI
Prev   9.11.3. DEM (Elevation)   Next

Name

ST_TRI — Returns a raster with the calculated Terrain Ruggedness Index.

Synopsis

raster ST_TRI ( raster rast , integer nband , raster customextent , text pixeltype="32BF" , boolean interpolate_nodata=FALSE ) ;

Description

Terrain Ruggedness Index is calculated by comparing a central pixel with its neighbors, taking the absolute values of the differences, and averaging the result.

[Note]

This function only supports a focalmean radius of one.

Availability: 2.1.0

Examples 

-- needs examples

See Also

ST_MapAlgebra , ST_Roughness , ST_TPI , ST_Slope , ST_HillShade , ST_Aspect

Prev   Up   Next
ST_TPI  Home  Box3D