DEM to GRASS raster

[Cliff Behrens]

Try this...

1)   dd if=diskfilename ibs=10240 | \
          m.dmaUSGSread top=1 bottom=400 left=1 right=500 \
              output=dem logfile=log

      Of course you need to substitute the right parms for your area.
      For example, bottom and right might be replaced by 1201 for all
      the data.  (I left the blocking parm as above.)

2)      m.rot90  input=dem  output=dem.r90
          rows=400  cols=500  bpc=2

3)    Create a region (in UTM coordinates) with g.region, then

     r.in.ll input=dem.r90 output=dem.utm
             dimension=500,400 bpc=2 res=3,3
             corner=sw,37:13N,103:45W spheroid=wgs72

     in the command above you have to give lat-long for a corner of your
      dem using the wgs72 spheroid.  The r.in.ll command should create all
     the necessary support files for you.  But if you run into problems,
     just run r.support.   

Best of luck,

Cliff Behrens