[GRASS-user] DEM with bathymetric contour lines

[Tomáš Brunclík]

Hello,
I tried to process bathymetry lines with negative elevation and it just 
worked in GRASS 7.0.1svn r65198 @Linux. Maybe try if it works with 
coarser resolution or region subset to test if the data volume is the 
problem, or if your version of GRASS really has problem with negative 
elevation values. Also try to look if the input raster contains expected 
values, if you did not check that already.
If the problem persists, post your findings with log of the commands you 
used, your GRASS version and platform.
If it seems a problem of the GRASS module, and you are using a recent 
version of GRASS, it would be better to fill a bug, instructions at 
http://grass.osgeo.org/development/bug-tracking/
Regards,
Tomas Brunclik

Dne 18.5.2015 v 16:47 Irantzu Alvarez napsal(a):
>
> I am trying to create a DEM from a bathymetric contour lines. Contours 
> are in vector format and the elevation value is negative (integers). 
> To create the surface I have converted the contours in raster (v.to 
> <http://v.to> rast) and then I have used r.surf.contour, but It 
> doesn't work (there is no error but the resulting output rasteris 
> exactly the same as the previous one, without any interpolation).
>
> This are my region settings:
>
> g.region -p -a raster=contours at iiaa nsres=1 ewres=1
>
> projection: 1 (UTM)
>
> zone:30
>
> datum:etrs89
>
> ellipsoid:grs80
>
> north:4818927
>
> south:4791484
>
> west:486512
>
> east:601275
>
> nsres:1
>
> ewres:1
>
> rows:27443
>
> cols:114763
>
> cells:3149441009
>
>
>
> I need a DEM of very high resolution of a wide area. I am using a 
> computer with large capacities for it.
>
>
> Could someone help me please?
>
>
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