[osmosis-dev] super-relation support

Aurélien FILEZ kinju59 at gmail.com
Sat Aug 27 11:45:37 BST 2011


Hi list,

super-relation is a concept to simplify mappers work and give more cohesion
in the case of shared borders between two regions. The frontier between zone
A and zone B is a relation which is reused to make the border of zone A and
zone B.

This makes relations having sub relations (member_type = 'relation') which
are not polygons. To have the polygon of the zone A or zone B, we have to
cumulate ways of their sub relations.

This concept is not defined in the official osm website but by talking in
deferents osm lists, it seems to become more and more usual. Here's in an
example of this use case :
http://www.openstreetmap.org/browse/relation/1362232

My question is : when extracting data with completeRelations, are sub
relations ways are include ?

Thank you,
Kin
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