[Tagging] Very large multipolygons

Martin Koppenhoefer dieterdreist at gmail.com
Tue May 2 10:45:26 UTC 2017


2017-05-02 12:10 GMT+02:00 Christoph Hormann <osm at imagico.de>:

> I agree there is no point in mapping this kind of feature as
> multipolygons in OSM but i disagree that changing type=multipolygon to
> type=boundary makes it any better.
>


+1


I thought about how this kind of feature could be represented in OSM in
> a practically useful and manageable way in the past and came to the
> conclusion that
>

* it would be useful to have a a robust option to sparsely map this kind
> of feature, i.e. map them in a way that avoids the need for the mappers
> to add redundant and non-verifiable information but allows them to add
> relevant and verifiable information as far as it exists and still have
> a formally valid and consistent object.
> * it will be very hard to get acceptance for such a mapping concept
> because of the widespread paradigm that everything in the world can and
> should be represented as points, linestrings or polygons (or nodes,
> ways and multipolygons in OSM).
>
> Some further discussion on the matter can be found here by the way:
>
> http://wiki.openstreetmap.org/wiki/Talk:Tag:natural%
> 3Dvalley#Valley_as_relation.3F
>


+1, more discussion on this (in German language) here:
https://lists.openstreetmap.org/pipermail/talk-de/2014-May/108270.html

Cheers,
Martin
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