Hi Brenado, TPI is rather simple and can be computed with r.neighbors + r.mapcalc:
r.neighbors -c input=dem output=dem_avg_9 size=9 r.mapcalc expression=”TPI_9=dem-dem_avg_9” g.remove -f type=raster name=dem_avg_9 Cheers Stefan From: grass-user <[email protected]> On Behalf Of Bernardo Santos Sent: torsdag 8. oktober 2020 12:35 To: GRASS User List <[email protected]> Subject: [GRASS-user] TPI (terrain position index) in GRASS GIS Hi everyone, Do any of you know if we can calculate TPI (terrain position index) in GRASS GIS? Or should we go for other tools such as SAGA GIS? Best wishes, Bernardo Niebuhr
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