A problem i find is with landuse=forest. Formally, those are zones that are used for growing trees. But practically in OSM, that tag is used for any land that is covered with trees. So formally, landuse=forest shouldn't overlap with other zones, but practically, until a new tag (landcover=trees) is rendered, this rule isn't going to be followed.
Getting off topic, I think you want natural=wood : http://wiki.openstreetmap.org/wiki/Tag:natural%3Dwood On 26 October 2017 at 13:37, Janko Mihelić <jan...@gmail.com> wrote: > I like the idea of formalizing OSM topology! > > An example: power lines should share nodes with nothing except power > towers, portals and buildings (substation buildings). > > A problem i find is with landuse=forest. Formally, those are zones that > are used for growing trees. But practically in OSM, that tag is used for > any land that is covered with trees. So formally, landuse=forest shouldn't > overlap with other zones, but practically, until a new tag > (landcover=trees) is rendered, this rule isn't going to be followed. > > Janko > > sri, 25. lis 2017. u 18:41 Martin Koppenhoefer <dieterdre...@gmail.com> > napisao je: > >> >> >> sent from a phone >> >> > On 25. Oct 2017, at 17:36, Gaurav Thapa <gthapa.w...@gmail.com> wrote: >> > >> > In Nepal we have been trying to make sure that each constructed >> building has its own footprint and is not connected to a neighbouring >> structure via a shared wall. We do this as in reality this is the case as >> each building structure though built next to each other has its own >> footprint (independent foundation). >> >> >> yes, you can find both situations: a single dividing wall used by both >> neighboring buildings (in Europe this occurs mostly with medieval >> buildings), or each building has its own walls (and foundations), but >> without a significant space between them (e.g. 2 cm of insulating material). >> >> I would treat both situations the same and use shared nodes, but maybe >> wouldn’t object if someone purposefully mapped the latter as 2 >> almost-touching buildings, although the osm building ways usually describe >> the footprint of the completed building (i.e. with facades, cladding etc.) >> and not the raw load bearing structure. >> >> cheers, >> Martin >> _______________________________________________ >> talk mailing list >> talk@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk >> > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk > >
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