Hi David

Be careful. In most cases the waterway WAS identical to the border when fixing them. But if a river changes his bed, the border doesn't change automatically. Imagine your real estate will change after each heavy rain :-)

So I would not change the border, because it is an import from official data and I would draw the waterway from aerial images completely independent.

Regards, Michael

-----Ursprüngliche Nachricht----- Von: talk-ch-bounces@openstreetmap.ch [mailto:talk-ch-bounces@openstreetmap.ch] Im Auftrag von David Däster Gesendet: Freitag, 3. August 2012 11:16 An: 'Openstreetmap Schweiz/Suisse/Svizzera/Svizra' Betreff: Re: [talk-ch] boundary and river node merge

Hi fredj

I'm not sure, but I would merge. Why? In general, the centerof a river ist he boundary of e region. With the tag on the river (or a part with splitting the line), it's set automaticly tot he center.

I just checked in some other regions (France, germany) with larger and smaler rivers, and all I've seen is that it's a river with the boundary tag.

Regards, David

-----Ursprüngliche Nachricht----- Von: talk-ch-bounces@openstreetmap.ch [mailto:talk-ch-bounces@openstreetmap.ch] Im Auftrag von Frédéric Junod Gesendet: Freitag, 3. August 2012 11:04 An: talk-ch@openstreetmap.ch Betreff: [talk-ch] boundary and river node merge

Hi all,

http://osm.org/go/0CSYTVpk

In this area, the boundary (Cossonay) and the river (La Venoge) share the same location.

Would be correct to merge the nodes in this section? (they are strongly related) Or align the nodes without a merge, or do nothing ...

Thanks,

fredj _______________________________________________ talk-ch mailing list talk-ch@openstreetmap.ch http://lists.openstreetmap.ch/mailman/listinfo/talk-ch

_______________________________________________ talk-ch mailing list talk-ch@openstreetmap.ch http://lists.openstreetmap.ch/mailman/listinfo/talk-ch

On Fri, Aug 3, 2012 at 11:30 AM, Simon Poole simon@poole.ch wrote:

Please DON'T merge, in fact please do not merge ANYTHING with boundaries from the SwissTopo import.

Reasons:

• boundaries tend to be historic and mostly reflect old river beds,

roads etc.

• the SwissTopo data was simplified on import

• merging the data increases the probability of editing errors impacting

the boundaries by a gigantic amount

It makes good sense. Thanks for the input.

fredj

Simon

Am 03.08.2012 11:04, schrieb Frédéric Junod:

...

Hi all,

http://osm.org/go/0CSYTVpk

In this area, the boundary (Cossonay) and the river (La Venoge) share the same location.

Would be correct to merge the nodes in this section? (they are strongly related) Or align the nodes without a merge, or do nothing ...

Thanks,

fredj _______________________________________________ talk-ch mailing list talk-ch@openstreetmap.ch http://lists.openstreetmap.ch/mailman/listinfo/talk-ch

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