Thank you! Does "the data is made available to the Mapnik renderer as a large shapefile (processed_p) which is generated every few weeks from planet dumps. " still hold true?
Steve On Fri, Dec 11, 2009 at 3:11 AM, Peter Körner <[email protected]> wrote: > Steve Bennett schrieb: >> >> So, my hard work tagging beaches and moving the coastline looks like crap: >> http://osm.org/go/u...@bcc >> >> Anyone know how long it's likely to be until the next coastline update >> is taken into account by Mapnik? >> >> (For bonus marks, can anyone explain what's special about coastlines, >> and why this happens?) > > The almighty wiki can: > > http://wiki.openstreetmap.org/wiki/Coastline > > The main problem of showing coastlines from OSM data is that Mapnik really > needs closed polygons. The polygon can (and normally should) be made of > several ways, but the ways should join end-to-end and eventually loop back > round without interruption, to close the polygon. An imperfect coastline > with many small gaps, reversed ways and other defects will cause the polygon > to break, and the coastline to be rendered incorrectly . One of the features > of the Coastline error checker is to try and join coastlines in such a way > as to make high-quality coastlines even with these imperfections. As the > coastlines are uploaded and completed the quality can be checked. > > Peter > _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
