[OSM-talk] Two different ways with the same nodes?

ce-test, qualified testing bv - Gert Gremmen g.gremmen at cetest.nl
Thu Feb 11 07:05:06 GMT 2010

I think that areas that share nodes with other areas
and especially with ordinary roads, create a lot of extra work
when something has to be edited.
I think that every object should stand on it's own,
and if there is a relation between the two, well, eh , use a relation.

Gert Gremmen

Openstreetmap.nl  (alias: cetest)
 Before printing, think about the environment. 

-----Oorspronkelijk bericht-----
Van: talk-bounces at openstreetmap.org [mailto:talk-bounces at openstreetmap.org] Namens edodd at billiau.net
Verzonden: Thursday, February 11, 2010 5:32 AM
Aan: talk at openstreetmap.org
Onderwerp: Re: [OSM-talk] Two different ways with the same nodes?

> Hello,
> Is it allowed (or intended) that two different ways share the same
> edges? For example:
> there are nodes a, b, c and two ways A, B with:
> A = (a, b, c)
> B = (c, b, a)
> While loading some osm data in a database i realized that there are some
> ways with this "problem", so
> is this a correct feauture or a mapping error?

absolutely correct

For example where an admin boundary follows the coast
one way for the coast
one way for the admin boundary

if we have joined ways we are getting renderer problems
so the au mob have decided to maintain duplicate ways in those circumstances.

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