[OSM-talk-be] Large multipolygons for Forêt d'Anlier

[Julien Minet]

Hi list,

Recently, I merge several polygons together to create a multipolygon "Forêt
de Rulles", which has now a osm id
<http://www.openstreetmap.org/relation/1653686#map=12/49.7748/5.7189>for
itself. I'd like now to merge several polygons together to form the Forêt
d'Anlier, 7000 ha, the biggest mostly deciduous forest of Belgium. My goal
is to create a unique object named "Forêt d'Anlier", and eventually link
this object with its wikipedia page
<https://fr.wikipedia.org/wiki/For%C3%AAt_d%27Anlier>.

But to do this, I identified 7 multi-polygons and 3 simple polygons to
merge, accounting for a total of 49 closed ways! I plan to do it by taking
the multipolygon with the highest number of polygon and add the other ways
of the others MP, but...


   - it takes time to do so, can I simply add a multipolygon to another
   multipolygon? it seems possible in JOSM (I tried) but it gives a warning.
   - is it a good idea to create such a big MP?  If not, what can be the
   alternative to give the name "Forêt d'Anlier" and other tags to this large
   forest?


Julien
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