[OSM-talk] joining ways to create a polygon

[Jozef Riha]

hello all,

i spent a few hours already figuring out how can i merge multiple
adjacent ways (such as members of
http://www.openstreetmap.org/browse/relation/1551258) into one way so
i could convert it into polygon file recognized by osmosis. thing can
be done easily in josm but i'm looking into scriptable solution. does
anybody know how, for instance, cloudmade is doing it?

cheers,

jose