[Qgis-user] Road graph topological editing

[Carson Farmer]

There is a line intersection tool in the Vector menu that might get
you your points: Vector - Analysis Tools - Line Intersections.
Not exactly sure what you mean by your second point though?

Carson


On 1 September 2010 17:41, toxjones at tiscali.it <toxjones at tiscali.it> wrote:
>  Hello,
>
> I imported in QGIS 1.5 a line vector layer representing roads (say arcs) of
> a city.
> I would like to:
> - create a new point vector layer with a point for each cross between lines;
> - add two columns to the original line vector layer, indicating the cross
> before and after each road, respectively.
>
> Any hint?
>
> Thank you very much!
> Toni
>
>
>
>
>
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-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation
National University of Ireland, Maynooth,
http://www.carsonfarmer.com/