[Talk-GB] Places and postcodes -- nodes/areas?
David Fisher
djfisher81 at gmail.com
Mon Sep 10 22:07:57 BST 2012
Hi all,
I've noticed that in my area (Croydon, S London) a lot of streets & POIs
are identified by Nominatim with a nearby suburb of Croydon (Thornton
Heath) rather than with Croydon town itself. The Nominatim/geocoding guys
said this was due to nodes being used instead of areas, and suggested I
create relations to identify the boundaries of the town and of its
suburb(s). My question is: are there any guidelines on how such
areas/relations should be defined? Political/admin boundaries don't really
help. Is it a case of just using my instinct & local knowledge? Are there
any good examples elsewhere?
My other (related) question is to do with postcodes. Some postboxes nearby
have been tagged not only with "ref=xxx" (containing the first part of the
postcode plus a reference no.) but also "postal_code=xxx" (again containing
the first part of the postcode), meaning that, again, a lot of streets &
POIs become identified by Nominatim with this postcode (e.g.
http://www.openstreetmap.org/browse/node/363996567). Should *all*
postboxes be tagged with "postal_code" in this way? What about streets
themselves? For streets, does the (first part of the) postcode need to be
displayed on the street sign for this to be done?
Thanks,
David.
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