Ah, but we are not in the business of adding non-physical stuff just because it makes a search work better. If we have something to add postcode data to then that's right and proper, otherwise the postcode centroid database can be off map and referenced from a separate database.
Cheers Andy > -----Original Message----- > From: Colin Smale [mailto:colin.sm...@xs4all.nl] > Sent: 31 October 2012 12:26 > To: talk-gb@openstreetmap.org > Subject: Re: [Talk-GB] Office of National Statistics data > > > Colin, it's fine to add the postcode data to a node object (eg a poi), > > just don't create a node with just the postcode and nothing else as > > this is meaningless. The postcode data we have is not the information > > for individual buildings, its just the centroid of the address polygon > > which will contain any number of buildings (or post delivery points). > > Thus when using the data its still necessary to do some interpretation > > and it's not possible always to know that you are assigning the right > > postcode to the right building/delivery point because we don't know > > where the boundary of one postcode is against another for the same > > street etc. > > I am guessing that just having the centroid is plenty adequate for a lot of > reverse geocoding probably including routing, i.e. "where is XX1 3AB" > or "take me to XX1 3AB". Obviously it won't cover questions of the form of > "what's the postcode for this building" which will require every individual > building/delivery point to be tagged. > > As (legal stuff permitting) "importing" the centroids would cover a very > popular use case with (IMHO) a quality which is adequate for most people, I > would not be so quick to dismiss it. > > Colin > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-gb > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2013.0.2742 / Virus Database: 2617/5864 - Release Date: 10/30/12 _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb