> From: Christoph Hormann [mailto:[email protected]] > Sent: Monday, March 11, 2013 10:50 AM > Subject: Re: [OSM-dev] Coastline changes Antarctica > > On Monday 11 March 2013, Jochen Topf wrote: > > > > I have described the details in this blog post: > > http://blog.jochentopf.com/2013-03-11-state-of-the-osm-coastline.html > > Have a look at the chapter about Antarctica. (The other stuff might be > > interesting, too, though.) > > Concerning the 180-degree-line - for that a solution that would allow to > process the coastline in a pacific centered coordinate system (or with > any other cutting meridian) would be best. And the obvious way for that > is to simply draw the coastline ways indiscriminately across the line. > I think the API and database would have no problem with that but > OSMCoastline would need to be able to close the coastline in arbitrary > configurations at the edges and the editors would need to support it. > I suppose especially the latter means it won't happen but still it would > be the most elegant solution i think.
OSM data is in WGS84 and the line going from -180 to +180 goes across the entire world in this projection. This is how osm2pgsql interprets it and I believe most other tools. There is no good way to deal with 180 problem. This impacts roads in Russia that cross the boundary too. _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
