Similarly, import (r.in.*) programs set up a region with the same
number of rows and columns as the raster being imported. If
georeferencing information is available, they will set the boundaries
from that, otherwise they typically place the south-west corner at
(0,0) and the north-east corner at (W,H) (i.e. nsres == ewres == 1).
Note r.in.gdal will load a non-georeferenced TIFF into lo-left (-W,-H)
to up-rt (0,0) ...
* using older GDAL 1.2.1 anyway
Hamish