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ST_TRI

ST_TRI
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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 (callback function version) , ST_Roughness , ST_TPI , ST_Slope , ST_HillShade , ST_Aspect

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