Hi, Not sure about grass gis, but have you tried the multidirectional option when styling a raster as a hillshade in QGIS? See https://bnhr.xyz/2019/01/22/hillshade-in-qgis.html.
Cheers, Paulo On Fri, Feb 16, 2024 at 11:20 PM B H via grass-user < [email protected]> wrote: > Hi, > I am trying to create a hillshading effect using DEM rasters similar to > ESRI multidirectional hillshading, but I am unable to get anything in. > grass to perform as good as ESRI (or even gdaldem multidirectional shading). > I am hoping someone in this group has some scripts /addon/tips that I can > try. > > So far I have tried the following on a few DEMs ( from 3m to 100 m grid > sizes). > 1) gdaldem multidirectional hillshading : It's not grass based, but so > far has performed better than other grass options : with the parameter > zfactor between 1 and 10. But it does not seem to be quite as good as ESRI. > 2) Following code is based on some old discussion on this email list.(Its > seems to exaggerate the hills and valleys more than I would expect) > https://gist.github.com/amcox/b54d65f08fe4448840462901fd6350d4 > 3) Other variants of hillshading like r.skyview : Tried with several > parameters but it seems to be inferior to gdaldem (It seems to be a 'washed > out' version of the multidirectional. hillshading). > > Thanks, > HB > _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user >
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