Dear all, I would like to calculate the slope length and steepness (LS) factor for USLE using r.watershed with the parameter length.slope. I have two questions: 1) Is it necessary to reproject my raster into a projected coordinate system or can I leave it in latitude-longitude? 2) It is required to set a value for the threshold. Is it not possible to get a value for each cell? If not, do I always have to delineate the watersheds as well and the length.slope returned is the value at the outlet?
Thanks in advance for any help. Best regards, Laura
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