Just as a further twist, one thing that swisstopo has started doing is showing municipality borders in the Lake Constance / Bodensee that it claims are "technical" (as we all should know there are no actual borders in the Bodensee). I'm working on the assumption that we will continue to ignore these, maybe one day we'll even be able to do away with our fake borders there too.

We were just discussing this today.

Essentially there's been a change of policy in some of the cantons that the BfS didn't document when it happened as far as can be determined at this point in time. This is not a dramatic issue as it literally just concerns water (and that just in a couple of places).

There is however a larger issue that is being worked on that simply follows from on the one hand how the borders were originally processed and on the other hand that over the last  decade there have been many small corrections to the borders outside of just the mergers and similar changes that probably require a re-syncing with the swisstopo data (which prior to last year would have required getting permission on a case by case base).  I suspect we should have something available in a couple of weeks, actually updating the borders themselves is likely to take months till complete.

Feel free to update the borders if there is something of specific interest to you, but any change will probably be redone when the above is in place.

Simon

Am 07.09.2022 um 08:39 schrieb GMUER Daniel:

Hi all.

 

As far as I understand there was an Import of the Municipalityboundaries from swissboundaries at around 2011 [1]. There are also annual “Municipality Mergers” [2] for municipalities that were merged.

Is there is also a defined workflow to keep changes on the geometries of the municipalityboundaries (admin_level=8) up to date in openstreetmap? For example, right now there are differences in Lakes like Lago Maggiore, Lago di Lugano and Lac Léman where the boundaries in osm follow the coastline but in swissboundaries the middle of the lakes. There are also other changes e.g. [3] that are not up to date in osm [4].

 

If there is no such workflow, I assume it is ok to adjust the border manually by following the vertexes of swissboundaries?

 

Thanks for your advice

Daniel

 

[1] https://wiki.openstreetmap.org/wiki/EN:Switzerland/swissBOUNDARIES3D

[2] https://wiki.openstreetmap.org/wiki/Switzerland/2022_Municipality_Mergers

[3] https://www.bern-ost.ch/MuensingenRubigen---Grenzverlauf-bereinigt-602417

[4] https://www.openstreetmap.org/#map=19/46.87921/7.54186

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