[GRASSLIST:2432] Re: grass 5.7 vector geometry

Radim Blazek blazek at itc.it
Mon Feb 2 04:48:59 EST 2004


On Sunday 01 February 2004 09:20, francesco.pirotti at unipd.it wrote:
> 2 - To digitize polygons and associate attributes to them, there are
> actually three parts in GRASS 5.7: the boundary, the centroid and the
> actual area (am I correct?).  The area itself does not contain attributes,
> whereas the boundary and the centroid do.  So if I want to export a shape
> poligon with v.out.ogr and I select "area" as elements the exported
> shapefile polygon will not have any attributes because attributes belong
> only to the boundary or the centroid.  If I export boundaries I get lines
> and not polygons.

Centroid's attributes are used for area.

Radim




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