Hi, > Can someone point me to an explanation/discussion about whether > overlapping polygons are 'permitted' or not? I get a different answer > every place I look, and I need to get this question out of the way > before before I can even consider developing with OSM. Overlapping polygons are definitly ok. A closed way with building=yes on top of a landuse=residential area is perfectly ok and very common.
The rule is "don't create overlapping polygons of the same type". So two landuse areas, say landuse=residential and landuse=forest, shouldn't overlap. In the spirit of "be strict in what you send, be liberal what you receive" you shouldn't create two such polygons, however your code has to be robust enough to deal with such a situation in the existing data. HTH, Patrick "Petschge" Kilian _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
