[OSM-talk] id Editor auto-converts split polygons into MP relation

[Mateusz Konieczny]

Oct 30, 2020, 16:33 by talk at openstreetmap.org:

> A split polygon with only an outer MP is not an "area".
>
It is a valid multipolygon representing an area.

A bit pointless multipolygon and maybe something that
should be converted to version not
using relation, but it is a valid tagging. 

> There's a clue in the name 'MultiPolygon' there has to be more than one.
>
Strictly speaking it means that it CAN have more than one part.

> Splitting into two serves no purpose, adds no quality.
>
It does not make it invalid

> Incomplete MP relations are not beneficial to OSM quality.
>
MP with single outer  and 0 inners is not invalid.


(this does not make it desired and preferable, but in this
case accusing iD of producing invalid relations is
baseless and invalid)

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