Hi Camila, On Tue, Feb 21, 2023 at 5:39 PM Roa Carvajal, Camila via gdal-dev <[email protected]> wrote: > > Hi, > > Recently I used gdaldem to compute slope and aspect from a Digital Elevation > Model. In the past I've used SAGA GIS to compute a more extensive list of > terrain parameters but it uses a large amount of memory for heavy raster > files. So I'm looking for a program (or scripts) that does the computation > with GDAL or an associated project. So far I found some of the computations > are implemented in Grass Gis.
FYI: I have turned your list below into a new overview related to your list below and what else is possible with GRASS GIS: https://grasswiki.osgeo.org/wiki/Terrain_analysis Maybe useful in addition to gdaldem (https://gdal.org/programs/gdaldem.html). Best, Markus -- Markus Neteler, PhD https://www.mundialis.de - free data with free software https://grass.osgeo.org https://courses.neteler.org/blog > I would appreciate any information you can provide. > > This is the list of terrain parameters that SAGA computes > (https://saga-gis.sourceforge.io/saga_tool_doc/2.1.3/ta_compound_0.html): > > Analytical Hillshading > Slope > Aspect > Plan Curvature > Profile Curvature > Convergence Index > Closed Depressions > Catchment Area > Topographic Wetness Index > LS-Factor > Channel Network Base Level > Channel Network Distance > Valley Depth > Relative Slope Position > > Thanks, > > Camila Roa > Graduate Research Assistant @ GCLab > University of Tennessee > _______________________________________________ > gdal-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
