ST_TPI
Returns a raster with the calculated Topographic Position Index.
raster ST_TPI
raster rast
integer nband
raster ST_TPI
raster rast
integer nband
customextent=NULL raster
text pixeltype="32BF"
boolean interpolate_nodata=FALSE
Description
Calculates the Topographic Position Index, which is defined as the folcal mean with radius of one minus the center cell.
This function only supports a focalmean radius of one.
Availability: 2.2
See Also
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