[GRASS-user] r.in.srtm help, again

[Hamish]

antonio rodriguez wrote:
> I have some bathymetric data from GEBCO which are in .grd format (GMT)
> 
> so I've tried:
> 
> r.in.bin -h in=data.grd out=bati
> 
> and I get:
> 
> ERROR: North must be north of south
> 
> The coordinates of the data are 38n/34n 9w/2e
> 
> I've tried too:
> 
> r.in.bin input=/home/toni/tmp/38n34n9w2e/38n34n9w2e.grd output=bati 
> north=38 south=34 east=2 west=-9
> 
> Using rows=4 cols=11

 ^^^^

> ATENCIÓN: Bytes do not match File size
> ATENCIÓN: File Size 319216 ... Total Bytes 44
> ATENCIÓN: Try bytes=7254 or adjusting input parameters
> 
> So I tried with bytes=7254 (bytes=7255, bytes=7256) but I never get
> the  right number
> 
> Any idea?


set the correct rows= and cols= options. Right now it is guessing the
raster resolution is 1 pixel = 1 degree x 1 degree.

note the bytes description; it will mostly always be 1, 2, or 4:
   bytes   Number of bytes per cell (1, 2, 4)
           default: 1



Hamish