On Tue, 06 Apr 2010 14:52:47 +0200, Frederik Ramm <frede...@remote.org> wrote: > Hi, > > Frederik Ramm wrote: >> we're thinking about importing post code areas in Germany. Are post
>> code areas being mapped in other countries already, and if so, using >> what tagging schema? > > Thank you for the replies. > > I have one last question. I believe that Germany is not unique in > sometimes using roads as post code boundaries, with houses on one side > having post code A, and houses on the other side having post code B. > > Suppose that one were to create a multipolygon for such a post code > area; how should it be done? > > Or turning the question around- if you looked at OSM data and you found > that two neighbouring postcode areas were using a road as their > boundary, would you automatically assume that houses on one side belong > to one and houses on the other side belong to the other? (If *all* > houses on the street belonged to one of the two post codes, then the > boundary could not be the street but would have to be offset a bit.) > > Or is this something that would have to be tagged specially? In the Netherlands, most roads have a different postcode on the two sides of the roads if you take the complete postcode. Suppose the postcode is 1234 AB then 1234 is (a part of) a town and AB is (a part of) a road. So the left side of the road (usually the odd numbers) has 1234 AB, the right side of the road has 1234 AC. I would assume that the boundary is just that: different postcode on either side of the boundary, wherever that boundary is situated. Regards, Maarten _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
