[GRASS-user] Interpolation with v.surf.rst

[Brian Sanjeewa Rupasinghe]

Hi,

When i omit -z flag, v.surf.rst function keeps on running and nothing
happens. Here is what i used.
v.surf.rst input=isoline at TOPOIKDATA zcolumn=height elev=elev_1m

Brian

On Wed, Jan 16, 2013 at 3:24 PM, Markus Metz
<markus.metz.giswork at gmail.com>wrote:

> On Wed, Jan 16, 2013 at 10:16 AM, Brian Sanjeewa Rupasinghe
> <jinkabs at gmail.com> wrote:
> > Hi,
> >
> > I have 2D isolines in GRASS vector format with elevation in an attribute
> > field called height.
> > I used v.surf.rst function to create raster DEM. However, after
> creation, it
> > outputs a DEM
> > with value 0 elevation only. The description of the function is given as
> > below. What would
> > be the possible cause for this? I am using wingrass 7.
> >
> > cheers, Brian.
> >
> > v.surf.rst -z input=isoline at TOPOIKDATA zcolumn=height elev=elev_1m
>
> If you want to use elevation values from zcolumn, you should not use
> the -z flag. Try instead
> v.surf.rst input=isoline at TOPOIKDATA zcolumn=height elev=elev_1m
>
> Also make sure that the computational region extents and resolution
> are set correctly.
>
> HTH,
>
> Markus M
>
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