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 );
Descrizione
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. |
Disponibilità: 2.1.0
Esempi
-- needs examples
Si veda anche
ST_MapAlgebra (callback function version), ST_Roughness, ST_TPI, ST_Slope, ST_HillShade, ST_Aspect