Hi Patrick,
Note that these general subjects are discussed on talk while dev discussion 
group is more for subjects related to software development, servers technical 
aspects, etc.This wiki page describes Multipolygon relations used to describe 
complex objects.https://wiki.openstreetmap.org/wiki/Relation:multipolygon

The role outer role is for ways that trace the outer ring of the object 
represented. The inner role is for objects that make the inner ring.
This LearnOSM tutorial shows and edit in JOSM where you trace a building with 
inner rings in the middle for 
courtyards.http://learnosm.org/en/josm/josm-relations/

 
Pierre 


      De : patrick keshishian <pkesh...@gmail.com>
 À : osm dev <dev@openstreetmap.org> 
 Envoyé le : Dimanche 18 Septembre 2016 23h50
 Objet : [OSM-dev] Multipolygon relation way member without role
   
Greetings,

Sorry about the subject line. I couldn't come up with anything better.

Continuing to learn my way through "relations" and assorted "tags",
I came across relation=3489649 [0], island of Oahu, HI, USA. What
interests me is its "way" member=428362225 (Way: War Memorial World
War II) [1] with role="".

It seems that this association is a mistake. If so, is there a
better place to report these sort of things as I come across them?
As I am still learning my way through the data, I don't wish to
do wholesale edits.

Question: Is there a general rule used when processing role=""?
OSM wiki for Relation [3] indicates that roles are optional. It
looks that OSM is rendering way=428362225 as an area [4].

Thanks in advance,
--patrick


[0] http://www.openstreetmap.org/relation/3489649
[1] http://www.openstreetmap.org/way/428362225
[3] http://wiki.openstreetmap.org/wiki/Relation
[4] http://www.openstreetmap.org/relation/3489649#map=19/21.59777/-158.10302

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