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Please accept my apology, if my question is not very professional, as I am just started to work with OSM.
The administrative boundaries between districts (admin level 9) in Berlin/Germany are often shown twice, but slightly different. Here an example: Way ID 24792156 (Gesundbrunnen/Pankow) is shown on the standard OSM-map. Way ID 115947730 (Gesundbrunnen/Pankow) is not shown on the standard OSM-map, but this one corresponds exactly to the topographic map of Berlin 1:10.000.
What is the reason to store two slighly different administrative borders for the same entity ? For what reason is Way ID 115947730 not shown on the standard OSM-map ? |
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Fred, I would suggest that the German mailing list (talk-de) or the German forum are probably better places to ask your question. Or potentially even the local Berlin list. See: http://wiki.openstreetmap.org/wiki/Mailing_lists#Country-Specific_Lists: I'm not German but having a look on both ways, it looks like one of them is obviously a dupplicate. The newest one (Way ID 115947730) has been created by 'mj10777' and the tag "boundary=administrative" is missing, the reason why it is not rendered. Also the older way (ID 24792156 ) belongs to relations which are the real identifiers of the administrative boundaries (relations with "type=multipolygon" or "type=boundary" + "boundary=administrative"). The newest way has been added with a comment suggesting that the source is perhaps more accurate. This is a valid reason to replace an older way (which could be re-aligned instead of creating a new way) but you should contact this person and asking him/her why he did not suppress the old version, why his version is not completely tagged (missing "boundary=administrative") and why it is not part of the boundary relations.
(22 Jun '12, 12:24)
Pieren
Answer converted to comment. The issue with these borders is well known and doesn't have to be discussed here. That is why I referred to the Berlin community. And naturally, yes, the Berlin/German community should fix the issue at last.
(22 Jun '12, 16:53)
SimonPoole ♦
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