[Qgis-user] Any ideas? Splitting polygons to only have one point in each polygon

[Nathan Woodrow]

The voronoi would work you would just need to clip the result against
your building polygons. So you are clipping your voroni against the
buildings so that only the bits of each voronoi polygon that overlap
the buildings would remain.

- Nathan

-----Original Message-----
From: magerlin
Sent: 14/02/2013 7:27 AM
To: qgis-user at lists.osgeo.org
Subject: [Qgis-user] Any ideas? Splitting polygons to only have one
point in each polygon

I've got a layer with building polygons and another layer with addresses.

One building can hold several addresses and I want to split the building
 polygons so every resulting polygon only holds one address (I can live with
 some strange shaped buildings).

I have come a part of the way by creating Voronoi polygons based on the
 address points and use clipping but my problem is that Voronoi polygons from
 neighbouring buildings may interfere with an actual building if they are to
 close:

<http://osgeo-org.1560.n6.nabble.com/file/n5034081/Split_Buildings.png>

If I could just limit the Voronoi polygon to stay inside the building
 polygon...

Anybodý got an idea on how to solve this?

I am by the way using the SEXTANTE modeller to create my own geoalgorithm
 doing this - it is a VERY strong tool and highly recommendable even if it is
 still a work in progress!





-----
 Regards Morten

Qgis 1.8.0 Stand alone installer in Win7 64 bit
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