I have a line file of airport runways across my state. I'm looking to symbolize them as part of a thematic town parcel layer, so I'd like them all to be in 2-D. My problem is, some bigger airports (that is, an airport with more than one landing strip) have lines bounding the landing strips, while smaller ones are just straight lines. Further, when I go to polygonize my line layer, the tool leaves behind everything it sees as 'unpolygonizable".
Is there a way to polygonize the entire layer WITHOUT having to manually edit every single feature? There are more than 200 of them...