[GRASS-dev] 3D vector + DB table

[Markus Neteler]

On Wed, Sep 27, 2006 at 10:17:54PM +1200, Hamish wrote:
> Alfonso Vitti wrote:
> > does anybody know if it is possible to have a 3D vector with faces 
> > entities linked to a DB table?
> > I have data about an urban area. Buildings are composed by walls and 
> > roofs faces, I'd like to import the data in GRASS preserving the 
> > geometry and the "building element" as much as possible and to link
> > the  resulting vector to a DB table.
> > nviz has some capabilities to allow the mouse selection of vector 
> > entities and the visualization of the associated DB records. Is it 
> > possible for any 3D geometry entities, including faces, or only for 
> > vector points?
> 
> give faces of the same building a common category number.
> 
> maybe v.extract to select only buildings you want.
> 
> I think Markus has already done this? See screenshots of 3D Trento:
> 
> http://mirror.aarnet.edu.au/pub/grass/grass61/screenshots/images/qgis08_grass6_toolbox.png
>

This is based on the categories. There was no DB connection.

AFAIK you cannot (yet) add a DB to faces. This should be
added.

Markus