On Fri, 1 Jan 2010, Hamish wrote: > 2,750 sq-km at 1mm resolution! > thar's yer problem. That teaches me to leave the default values after importing a bunch of vector maps! In the PERMANENT mapset the stored raster DEM map has 18724 rows * 24657 columns for a total of 461677668 cells. Much smaller at 46168 sq-km. Rich