gtopo30 extraction problem

jiao weili wljiao at
Mon Nov 1 03:30:29 EST 1999


I try to import gtopo30 data into grass. I proceeded as below: -s input=E100N90.DEM output=gtopo30 bytes=2 north=90 south=40 east=140 
west=100 r=6000 c=4800

It seems work well. While when I displayed the map, I got a white sheet.  When I query 
with mouse, it seems that the elevation value is null. 

Thanks for any response.

Best regards,
jiao weili
wljiao at

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