Since city status is such an emotive subject in the UK and I believe there's some kind of competition to choose another couple of cities to be created this year, I think we should stick with the officially designate dlist
Regards Brian On 17 October 2011 10:48, Ed Loach <e...@loach.me.uk> wrote: > I was watching the quiz show "Holding out for a Hero" last night on > TV and one of the questions was how many cities are in the UK. The > correct answer out of 26, 46 and 66 was 66. Sorry for the spoiler if > anyone had recorded it to watch later and couldn't have guessed. > > However I idly wondered at the time how accurately UK cities are > mapped. This morning, with the help of a Geofabrik British Isles > extract and a .poly file I created moments before finding the > existing UK one on the Cloudmade website, I can confirm that we have > 69. After finding an official list on a UK Gov website[1] and > comparing: > > We are missing: Chichester, Lichfield, Ripon, Salford, St David's, > Stoke-on-Trent, and Westminster > We have extra: Bournemouth, Chelmsford, Colchester, Ipswich, > Jedburgh, Middlesborough, Milton Keynes, Northampton, Reading, and > Swindon > > I have a feeling that some of the extra ones have been tagged as > cities for the renderer as rendering of cities doesn't take into > account area (of a node?) or population as far as I know. > > Having said that, the Key:place wiki page[2] seems to suggest that > the convention varies by countries with suggested tagging based on > population for those countries that haven't established a > convention. In other word it fudges the issue because mappers > disagree. Map Features[3] suggests "Urban settlement of national > importance as defined by national/state/provincial government. May > be state capital, provincial capital or center of a metropolitan > statistical area. Often over 100,000 people", which leans towards > using official city definitions in countries where those exist. > > So currently, if someone wants a list of UK cities from OSM, they > can't get it by using osmosis to extract place=city nodes. Or they > can, but they would find our data to be wrong. > > So, should we correct the tagging of cities in the UK so people can > extract correct information? Discuss... > > Ed > > [1] http://is.gd/1dUxfR > [2] http://wiki.openstreetmap.org/wiki/Key:place > [3] http://wiki.openstreetmap.org/wiki/Map_Features#Places > > > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-gb >
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