ST_Roughness — Returns a raster with the calculated "roughness" of a DEM.
raster
ST_Roughness
(
raster
rast
, integer
nband
, raster
customextent
, text
pixeltype="32BF"
, boolean
interpolate_nodata=FALSE
)
;
Calculates the "roughness" of a DEM, by subtracting the maximum from the minimum for a given area.
Availability: 2.1.0
-- needs examples
ST_MapAlgebra (callback function version) , ST_TRI , ST_TPI , ST_Slope , ST_HillShade , ST_Aspect