On Tue, Oct 2, 2018 at 4:02 PM Mateusz Konieczny <matkoni...@tutanota.com> wrote:
Why selecting buildings and tagging them to site relation is easier than > selecting building and adding them to a multipolygon realation? > I can't even begin to comprehend how that would possibly work. Well, maybe I can. If we make the outer role of the polygon "not university" then we can add the individual, scattered buildings as inner role "university." Seems bizarre to me, but feasible. It's analogous to the way you can use a multipolygon to define a wood with ponds in it. Except "wood" is a concrete term everyone understands but "not university" is not. If we make the outer role "university" then the inner roles have to be all the places that the university buildings are not, with role "not university." Not only do we have the conceptual problem of "not university" but it would be very fiddly to map. I can't see any way of using multipolygons for this case that makes sense and is easy to do. If you can, then please explain it. A site relation, however, is simple. Just add each building to the relation. Why do you consider this to be no easier than the multipolygon approach? -- Paul
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