[Qgis-user] divide poligons

[Dario]

I have a layer of polygons, these polygons are cut by two parallel lines. 
Sometimes just one line crosses the polygon, dividing it into two.
need to create new polygons, formed by the polygon area that is contained 
between the lines, and the areas that are outside the inner lines, and the 
second case to create new polygons formed by the two areas divided by the line.
Is there any plugin or geoprocess  in quantum gis what running this?
I can only do the reverse process, which is the polygon cut the lines that 
intersect with it, but I can not do otherwise with the lines dividing the 
polygon.

(illustrative image attached)



Thanks

Dario



      
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