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I read about the planarize function in ArcGIS, which seem to do exactly what I want. Is there a similar feature in QGIS or another free tool?

I have a shapefile with various shapes intersecting each other and I want each intersection to become a node and between every two nodes to have a simple line.

The goal is to easily convert my .shp in .osm and use it with Graphserver. As it is, Graphserver says I don't have edges, and I deduced the above is my problem.

Thanks a lot

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1 Answer 1

In GRASS GIS which is topological you can use v.net for this operation. You can access it through the QGIS-GRASS Toolbox.

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Hi! I had a look about the v.net documentation, I'm not sure about the end result I should get to be able to import this in the graphserver… –  charlax Oct 6 '11 at 1:44
    
You can then export to a OGR supported format with v.out.ogr. –  markusN Oct 8 '11 at 23:59
    
Odd the documentation isn't very explicit that it handles intersections. Did you try this and does it work? –  Sideshow Bob Sep 17 '12 at 13:10

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