[talk-ch] Map consistency - private floating islands

Kai Pankrath kai.pankrath at gmx.de
Sat Jul 7 10:50:31 CEST 2018

Hi all,


I am working on the map quality using https://www.keepright.at (as well as
http://tools.geofabrik.de/osmi/) and encountered the "floating island"
problem (ways not connected to the rest of the map). I came across one
specific situation and can think of another:

1.	The way is in a private garden and the only access would be
"through" the house (physical entering through the main entrance and
potentially entering a garden through a terrace door) like here: 
2.	I have not found a good example, but you can think of a park with
limited access and entrance as well as exit are only possible through the
building (e.g. a castle or museum where you pay a fee to access other


Basic question: How to map that? I see one option for private ways: I would
simply add "access=private" and any consistency checker could pick that up
in the future ignoring "private" islands. For more public-like situations I
am not so sure. Adding a highway=footway/tunnel=yes (+layer?) through the
building? Adding properties at the end points of the way networks similar to
amenity=parking_entrance (+creating a relation between these points)? Any




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