2010/10/20 Alex Mauer <ha...@hawkesnest.net>: > IMO that just means that rendering needs to be based purely and directly on > population numbers, or we need some higher numbers (1 000 000 = > metropolis[1] 10 000 000 = megacity[2]? ) It might be useful to use a > relation to group separate legal-cities with their core city into a > metropolis, but that might be overcomplicating things.)
that's an obvious and simple approach, but won't satisfy on the long run to get well labelled maps and it won't help if you want to put emphasis according to something different then population. I give you an example of such an edge case where simple algorithms won't help: Tübingen, a small town (87.788 inh.) in the south west of Germany: http://www.openstreetmap.org/?lat=48.5194&lon=9.0602&zoom=14&layers=M http://de.wikipedia.org/w/index.php?title=Datei:De_Merian_Sueviae_242.jpg&filetimestamp=20060905162004 it has an important university since 1477 (including big university hospitals), a castle and is "capital" of a "government district" (Regierungsbezirk = one level below "land"). Therefore it was usually depicted on old paper maps before Reutlingen, which is only 10 km away and has 112.132 inhabitants but no university (it has several colleges though, one dating back to 1855) and no castle (because it was an independent town (Freie Reichsstadt)). Reutlingen http://www.openstreetmap.org/?lat=48.4898&lon=9.2214&zoom=13&layers=M http://de.wikipedia.org/w/index.php?title=Datei:Re%C3%BCtlingen.jpg&filetimestamp=20080701051448 I guess that Tübingen is more known to the average German then Reutlingen, but that's just a guess. As written before, traditionally cartographers gave more importance to Tübingen, while in current automated internet cartography Tübingen looses almost always against Reutlingen. Maybe this is a reflection of a changed interpretation of importance but I fear it is simply a loss in quality... Cheers, Martin _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
