A billion-pixel scaled DEM is the main input to compute the slope length and steepness (LS) factor for RUSLE (`r.watershed`), only.
Tiling this DEM in tiles of 5K^2 pixels (`r.tile`), appears to be a reasonable approach to parallelise this process. I have no idea if an overlap among the different tiles is required (to avoid border effects!?) and, if yes, how many pixels it should be. Are there practical guidelines? Do I need to study the LS factor algorithm? Is it something that analysts with experience in the domain can figure out empirically? Thank you, Nikos _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
