Consider a wetland that contains a water body. I'm used to map that as
natural=water inside natural=wetland - no multipolygon fanciness, just
one on top of the other. JOSM validator complains about it, which irks
me, so I opened a ticket at https://josm.openstreetmap.de/ticket/19171 -
where mdk suggests that I may be doing it wrong...
Is my simple way incorrect ? It feels correct to me because wetlands are
complex objects - water bodies are part of them, cross them or partially
overlap them. From a tagging point of view, it implies that some area is
both natural=water and natural=wetland - I see no problem with that...
But others might consider that a logical impossibility.
So, which is the correct way: plain natural=water inside
natural=wetland, or a natural=water multipolygon with natural=wetland on
its inner ?
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