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<div>
<br></div><div>Regards</div><div><br></div><div>Brian<br><br><div class="gmail_quote">On 17 October 2011 10:48, Ed Loach <span dir="ltr"><<a href="mailto:ed@loach.me.uk">ed@loach.me.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
I was watching the quiz show "Holding out for a Hero" last night on<br>
TV and one of the questions was how many cities are in the UK. The<br>
correct answer out of 26, 46 and 66 was 66. Sorry for the spoiler if<br>
anyone had recorded it to watch later and couldn't have guessed.<br>
<br>
However I idly wondered at the time how accurately UK cities are<br>
mapped. This morning, with the help of a Geofabrik British Isles<br>
extract and a .poly file I created moments before finding the<br>
existing UK one on the Cloudmade website, I can confirm that we have<br>
69. After finding an official list on a UK Gov website[1] and<br>
comparing:<br>
<br>
We are missing: Chichester, Lichfield, Ripon, Salford, St David's,<br>
Stoke-on-Trent, and Westminster<br>
We have extra: Bournemouth, Chelmsford, Colchester, Ipswich,<br>
Jedburgh, Middlesborough, Milton Keynes, Northampton, Reading, and<br>
Swindon<br>
<br>
I have a feeling that some of the extra ones have been tagged as<br>
cities for the renderer as rendering of cities doesn't take into<br>
account area (of a node?) or population as far as I know.<br>
<br>
Having said that, the Key:place wiki page[2] seems to suggest that<br>
the convention varies by countries with suggested tagging based on<br>
population for those countries that haven't established a<br>
convention. In other word it fudges the issue because mappers<br>
disagree. Map Features[3] suggests "Urban settlement of national<br>
importance as defined by national/state/provincial government. May<br>
be state capital, provincial capital or center of a metropolitan<br>
statistical area. Often over 100,000 people", which leans towards<br>
using official city definitions in countries where those exist.<br>
<br>
So currently, if someone wants a list of UK cities from OSM, they<br>
can't get it by using osmosis to extract place=city nodes. Or they<br>
can, but they would find our data to be wrong.<br>
<br>
So, should we correct the tagging of cities in the UK so people can<br>
extract correct information? Discuss...<br>
<br>
Ed<br>
<br>
[1] <a href="http://is.gd/1dUxfR" target="_blank">http://is.gd/1dUxfR</a><br>
[2] <a href="http://wiki.openstreetmap.org/wiki/Key:place" target="_blank">http://wiki.openstreetmap.org/wiki/Key:place</a><br>
[3] <a href="http://wiki.openstreetmap.org/wiki/Map_Features#Places" target="_blank">http://wiki.openstreetmap.org/wiki/Map_Features#Places</a><br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
Talk-GB mailing list<br>
<a href="mailto:Talk-GB@openstreetmap.org">Talk-GB@openstreetmap.org</a><br>
<a href="http://lists.openstreetmap.org/listinfo/talk-gb" target="_blank">http://lists.openstreetmap.org/listinfo/talk-gb</a><br>
</blockquote></div><br></div>