I am downloading and importing 1m LiDAR DEMs for a 667 mi^2 (1727.5 km^2) drainage basin. These are all in 7.5' topographic quad sections. The files take up a lot of disk space and memory when working with them.
I assume that by careful setting of the region I can display the individual maps as a single map, and I can set a computational mask using the vector basin watershed (boundary). Is there way to 'clip' the DEM using the watershed map in the way that v.clip works with two vector maps? While the workstation has 32G RAM and 2T of disk space I would like to limit the DEM to the drainage basin itself and exclude all areas outside it. Looking at all the r.* modules in core and extensions none strikes me as the appropriate tool. I'm open to advice on working with huge raster files. Regards, Rich _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
