On Wed, Dec 17, 2008 at 4:33 PM, Scott Atwood <scott.roy.atw...@gmail.com>wrote:
> On Wed, Dec 17, 2008 at 4:20 PM, Karl Newman <siliconfi...@gmail.com>wrote: >> >> I looked a bit at the osm.xml file for Mapnik. It currently orders them by >> the place tag hierarchy (city, town, suburb, village, hamlet/locality), but >> there doesn't seem to be any sorting within equal hierarchies (which is >> probably why you see Daly City instead of San Francisco at certain zooms). >> Ideally it could do this by population, with a bonus for capitals. The >> documentation for Mapnik indicates that it supports value comparisons, but >> it looks like the population would have to be stored in a column. Anyway, >> that seems like it would be the way to go. >> > > I don't think simple population ranking is necessarily the best option. > There are other, more subjective factors that are important as well. For > instance, San Francisco is smaller in terms of both population and land area > than San Jose, and both are the county seat of their respective counties, > yet due its economic, cultural, and historical importance, San Francisco > should trump San Jose in case of a rendering collision. > -Scott > That's the sort of thing automated renderers have difficulty sorting out. Maybe we need a tag for cultural value :-P (I would hazard a guess that San Jose has a larger economic impact, though.) Karl
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