>> I'm trying to render some buildings with holes in and using >> multipolygon relations to do it, but they don't always render. See, >> for example Whitehall[1], where the HMRC/Treasury building is rendered >> with its holes but the Foreign Office building to the north of it >> doesn't have its multiple holes rendered, nor does the smaller >> building to the east of this which only has one inner and one outer >> part. >> >> Would be grateful for any insight. >> > > Mapnik seems to have trouble with more than one hole. > if you look closely the HMRC/Treasury is not mapped as one, but two > buildings, each with one hole. > > As to the building to the east, I don't know. > For me also buildings with multiple holes work fine, but only when the outer part goes clockwise and the inner parts go anticlockwise and are without any tag. Even with a created_by tag the holes had not been created for this example <http://www.openstreetmap.org/?lat=48.139768&lon=11.549817&zoom=17>. Without any tags in the inner parts the holes appeared. The created_by tags of the inner parts in example [1] may be the problem.
Cheers, Michael _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
