2015-01-15 11:23 GMT+01:00 Martin Koppenhoefer <dieterdre...@gmail.com>:
> > I wonder if it wouldn't make more sense to use the approach of islands / > archipelago, i.e. have a dedicated, explicit and specific tag for the > "combined feature" (e.g. several natural=island/islet can be together in a > multipolygon relation which is tagged natural=archipelago). > IMHO we don't even need a relation. All islands can have the same tag cluster:archipelago=*. If data consumers find a tag that starts with "cluster:" they can group all elements that have the same cluster:archipelago. It's the same as streets in a city. How do you know if two segments of a street are the same street? They have the same name. Archipelago isn't so much an entity in itself. It is just an attribute of the islands it is consisted of.
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