[Tagging] place=island wiki page - coastline

Martin Koppenhoefer dieterdreist at gmail.com
Wed Nov 5 10:29:04 UTC 2014

2014-11-05 11:03 GMT+01:00 Richard Z. <ricoz.osm at gmail.com>:

> > Would is be possible to make natural=coastline usage more clear on
> > place=island wiki page?
> or - would it be possible to make coastline work for lakes as well?

I recall from older discussions that mappers prefer to keep the semantics
clean. If it is a lake, it shouldn't be tagged as "coast" (you could use
"shoreline"?), because a coast implies a sea or an ocean. From a practical
point of view, including big lakes into the coastline extract would be
something useful for many people using a rendering approach similar to that
of carto-osm, but it doesn't necessarily require to twist tagging.

Yet another comment on coastlines and islands: I believe it would be better
not to add both tags to the same osm element, but rather make the
distinction of line and polygon (i.e. create a multipolygon for the island
and add the coastline tags to the way), so to avoid ambiguities where the
name (and all other tags) belong to.

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