[GRASS-user] ascii to dem

Hamish hamish_nospam at yahoo.com
Wed Mar 14 21:17:52 EDT 2007


antonio rodriguez wrote:
> I have imported into GRASS an ascii file (bathymetry) like this:
> 
> r.in.ascii in=/home/toni/tmp/38n34n9w2w/baty2.xyz out=bati
> 
> north:   38
> south:   34
> east:    -2
> west:    -9
> rows:    241
> cols:    421
> -9                  38      -137
> -8.98333        38      -127
> -8.96667        38      -119
> -8.95               38      -112
> -8.93333        38      -101
> -8.91667        38      -81
> -8.9                38      -63
> -8.88333        38      -45
> -8.86667        38      1
> -8.85               38      8
> 
> How do I transform it into a 'typical' dem map. It's to say a 
> continous-aspect dem map not a dotted-aspect one?


That looks like x,y,z data, not a 2D ASCII array. r.in.ascii wants a 2D
array of z values, x,y are calculated from header. (see the example in
the help page)


Use r.in.xyz to import your data after crafting g.region settings by hand.


Hamish




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