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 ? asked 21 Jun '12, 15:45  Fred-1 |
One Answer:
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: https://wiki.openstreetmap.org/wiki/Mailing_lists#Country-Specific_Lists: answered 21 Jun '12, 17:35  SimonPoole ♦ |
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.
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.