[OSM-talk] Two different ways with the same nodes?
frederik at remote.org
Thu Feb 11 07:53:32 GMT 2010
edodd at billiau.net wrote:
> For example where an admin boundary follows the coast
> one way for the coast
> one way for the admin boundary
This is a somewhat special case; normally, an admin boundary will be
backed by a multipolygon relation, and at least hereabouts (.de) we tend
to simply stuff the coastline into the admin multipolygon. So you will
have *no* extra "boundary=adminisdtrative" way along the coast - just
one single way tagged as coastline, which also happens to be a member of
the boundary relation.
(People tend to create one "landmass" relation that goes only up to the
coast, and one for the national boundary which includes a 12 mile zone
or so, but that's another matter.)
In our neck of the woods, a typical example for two ways sharing the
same nodes would be a road with a tram line on/in it. We do not create
one way that has both highway=residential and railway=tram (because
then, if the way also had a ref=, name=, or oneway=, would that refer to
the tram or the street?) - instead we have two ways using the same nodes.
And to the OP: Das haetten Dir die Leute auf talk-de auch erklaert ;)
Frederik Ramm ## eMail frederik at remote.org ## N49°00'09" E008°23'33"
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