>> By putting the Postcode in we are supply OSM with the postcode to be >> able to give that street a post code, same goes for streets. >> > > Rather than having the postcode in a separate "addr:postcode" tag for each > building on the street, I would think it would be better to tag the street > itself with the postcode and then somehow link the buildings with the > street (relations?) > >
Postcodes are organised in hierarchical areas, so should really be mapped with enclosed areas, like administrative boundaries, rather than on nodes or ways. eg: SN contains SN1, SN2, SN3 SN1 contains SN13, SN14, SN15 SN13 contains SN13_1AB, SN13_2PQ A lowest level postcode (SN13_2PQ) is not unique for a node, as multiple dwellings will have the same postcode, so this leads to having multiple tags for what is essentially a single data item, a postcoded area of land. Marking postcodes on a way could be problematic, as there can be different postcodes on opposite sides of a road. _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
