OpenStreetMap 開放街圖
I hope this isnt a dumb question - but why isn’t Minneapolis > St. Paul? I am assuming it is because it is a capital, but I think every other map I have ever seen always has Minneapolis slightly bigger font for the label. Happy Monday
https://www.google.com/maps/@44.8718971,-92.7734437,7.75z
bing shows St. Paul over Minneapolis
討論
由 BushmanK 於 2016年09月19日 16時51分 發表的評論
First of all, you shouldn’t really care about how it’s rendered on a map since everything is okay with a data. Standard style tries to look good, but it’s still just a technical map, not trying to pretend like it’s a political, topographical or some other specific type of map.
osm.org/relation/136712#map=11/44.9706/-93.2616 - Minneapolis osm.org/relation/136612#map=11/44.9397/-93.1061 - Saint Paul
As you can see, both boundaries have similar border type and administrative level. But what’s different, can you guess? It’s a size (I mean, width).
由 Math1985 於 2016年09月19日 22時06分 發表的評論
You can find the relevant code here:
https://github.com/gravitystorm/openstreetmap-carto/blob/master/project.yaml#L1555 https://github.com/gravitystorm/openstreetmap-carto/blob/master/placenames.mss#L57
Names of cities and towns are rendered in the layer placenames-medium. Each place is assigned a score, obtained by multiplying the population by 3 for national capitals, 2 for state capitals, and by 1 for other places. If a city has no population tag, 100000 is used as default.
It seems currently neither of the places have a population tag in the database, but adding both population tags wouldn’t help as Minneapolis seems to be less than twice as big as Saint Paul.
We recently had a big discussion that resulted in the current algorithm, see https://github.com/gravitystorm/openstreetmap-carto/pull/1461.
由 maxerickson 於 2016年09月20日 15時18分 發表的評論
@BushmanK the boundary relations don’t factor into the label placement or sizing.
I do see population data on the place nodes.
osm.org/node/151538698
osm.org/node/151370941