dem extraction & examine

[Wang Song]

> 
> I am still having problems reading in my dems.  This is the output from the command m.dem.examine. Note the resolution (0)
> 
> 
> MINDEGO HILL,CA  BIG BASIN DEM  DLG-DEM           
>  
> min elevation: 224.000000  max elevation: 2816.000000
> 
> ns_res: 0.000000  ew_res: 0.000000
> # of columns in file =   809773872
> 
> file north UTM = 4136628.750000
> file south UTM = 4122665.750000
> file east UTM = 577600.937500
> file west UTM = 566405.250000
> -------------------------------
> 
> Danimal
> 

	Have you tryed to use UNIX "dd" command to read DEMs from tape to disk
files ? If you have not, please try it with correct blocksize as specified on
the tape label. Then use "m.dem.extract" to read a DEM from the disk instead
of tape.

        dd if=[tape_device] of=[new_filename] bs=value
        m.dem.extract input=[new_filename] output=[new_rast_name] 
                      blocksize=value

        If you run GRASS4.0 on Sparc, this procedure should be working.




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 #    #    ##    #    #   ####      Wang Song  (wang)
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 #    #  #    #  # #  #  #          Center for Advanced Spatial Technologies
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INTERNET:  wang at cast.uark.edu      Tel: (501) 575-6159
                                   FAX: (501) 575-3846

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