I've been trying to calculate slope in percentage for a project I'm working on but keep running into this issue
- Whenever I calculate slope using the designated Slope tool or the r.slope.aspect tool I get these lines all over my output (see below). This happens when I try to calculate either percentage or degrees. I have seen similar problems to this on StackExchange and they all suggested mosaicking the raster using a bilinear interpolation. The image below is the output after doing that, so it doesn't seem to have worked.
Extra information: I'm using the USGS 3DEP raster images for California. I mosaicked three images using build vrt with bilinear interpolation. I then reprojected the images to EPSG:26910 (units are in meters).