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Is it OK to have an amenity=parking inside, say an amenity=hospital area (where the outer area represents the hospital site, not just a single building)? It feels wrong to have overlapping keys of the same type. But so does a multipolygon - the parking area IS part of the hospital. I've come across this dialemma a few times (e.g. leisure=playground inside a leisure=park). Overlapping the areas seems to render OK but is it good practice? |
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There are instances where it's perfectly correct to have multiple overlapping areas, I think you've identified a couple of them. Carry on! Where there comes a problem is if you try to have multiple values of the same key on the same node/way/area (aka "overload the key"). For example, if you put amenity=parking;hospital, what displayed would depend on how the renderer interprets that (would it display as parking? as hospital? as both? as neither?) |
