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

[Martin Landa]

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