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

[Brian Sanjeewa Rupasinghe]

Yes. there is no point in using Z coordinate if the input is 2D. However,
in the current GRASS 7, even if the input is 2D, if -z flag is not used,
v.surf.rst does not work.

On Wed, Jan 16, 2013 at 4:24 PM, Martin Landa <landa.martin at gmail.com>wrote:

> Hi,
>
> 2013/1/16 Markus Metz <markus.metz.giswork at gmail.com>:
> > 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
>
> I was thinking to omit such -z flags in G7.
>
> * if zcolumn is given, use values from this column
> * if zcolumn is *not* given use z coordinates (if vector is 2D, print
> error).
>
> What do you think? Something similar was done for v.out.ogr (-z ->
> !-2) some weeks ago. Motto would be: to use z coordinates if the map
> is 3D and the user didn't enter an option or flag which forces to use
> values from attribute table.
>
> Martin
>
> --
> Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa
>
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