Hi, Rahkonen Jukka wrote: > I meant "Do all the polygon parts get their correct names in > rendering,
There are multiple renderers and they generally don't agree on how to handle multipolygons. I would assume that most can deal with a hole of a multipolygon having its own identity (e.g. hole in forest tagged as farm). Most will probably not be able to derive the identity of something from the kind of polygon surrounding it - i.e. you will probably have to tag an island as such, and not count on the renderer knowing that everything that is a hole in a water polygon will automatically be an island. There is also a problem with touching holes; if you have a forest and in the forest there is a farm and a lake next to each other, then some people draw a forest with two holes, whereas standard simple feature geometry does not allow touching holes (and anyway, as you correctly say, for export e.g. in shapefiles, extra polygons would have to be created for the holes). A further problem arises when the hole boundary consists of multiple ways, something that is allowed for advanced multipolygons, but you would not be able to place the name of the island (or whatever) in this scenario. Bye Frederik _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
