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Is there a rule (or a hint) as to how I can recognize (political) boundaries. Is It country dependant? I am particularly interested in Swiss community boundaries. For example, the relation 1682248 has the the tags Is it safe to assume that I can query for boundary=administrative and name=$VILLAGENAME in order to find the nessesary ways for the boundaries. Also, can I take it as a given that such a boundary is always a relation? |
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There is no way to guarantee that no one have edited the data so that it does not work. According to the wiki you can assume that this is the case. But be aware that errors might occur. |
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To test this, you can try one way:
Yes, that's right. But can I rely on
(21 Feb '12, 18:48)
René Nyffene...
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The data on administrative boundaries is quite up to date and originates from an concerted import effort of the Swiss osm community, which is documented as follows: - http://wiki.openstreetmap.org/wiki/EN:Switzerland/swissBOUNDARIES3D - http://wiki.openstreetmap.org/wiki/DE:Grenzen_der_Schweiz To my knowledge the boundaries for cantons and communities should be quite complete, a couple of cantons also have the districts (Bezirke) but for other I wouldn't know. A word about completeness: The boundary-import from Swisstopo was done in a systematic way and the complete data was available. However and as always in osm - check the data, live with its errors and/or fix them yourself. I briefly checked via overpass-api the boundary=administrative relations and there are 3329 in Switzerland, so it shouldn't look too bad. |
