ST_TRI
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]](images/note.png)
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This function only supports a focalmean radius of one. |
Availability: 2.1.0
See Also
ST_MapAlgebra (callback function version) , ST_Roughness , ST_TPI , ST_Slope , ST_HillShade , ST_Aspect