[Qgis-developer] Create Multiple Polygons from Polygon and Polylines

[Carson Farmer]

>
> Basically the polylines need to be "dissolved" first.  Is there an existing
> function to acheive this?


You will likely need to do this yourself by finding segments that share a
node, and creating a single line from all the associated QgsPoints.


> Also, is there an enexisting function to union polygons programaticlly?
>

Certainly, check out QgsGeometry.combine() in the docs.

Carson


-- 
Carson Farmer
National Centre for Geocomputation
John Hume Building,
National University of Ireland, Maynooth,
Maynooth,
Co. Kildare,
Ireland.
www.carsonfarmer.com
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