[OSM-talk-be] municipal boundaries in Belgium

[joost schouppe]

>
> very true... 100 meters would be vast imho. A difference of 5 meters I
> would think that is pretty much ok, although the importance of that can
> be big when borders cross buildings.
>
> Exactly, I think the definition of correct is pretty narrow here.


> More important: remember that those boundaries usually align on each
> other, so when you make a admin level 8 smaller, you -probably- also
> need to modify all others as well. e.g.  If you make north border of
> Antwerp smaller, you probably need to make Belgium smaller too, AND the
> province etc.  probably even from level 1 down to 9 if you want to do
> this well.  At the least we will need to verify them to make sure.
>
> Yes, this is something to keep in mind. As long as you don't go splitting
ways in the wrong place, that shouldn't be a problem though, right? If they
are properly mapped, boundaries like that should reuse the same segments
over and over again, so correct one and you correct all the others. E.g.
http://www.openstreetmap.org/way/87806314



> GRB data actually has border information if I remember correctly.  some
> of their map layers (tiles) show the level 8 boundary (a very fine line
> though, almost invisible).
>
> I think this is the one:
https://download.agiv.be/Producten/Detail?id=1217&title=Voorlopig_referentiebestand_gemeentegrenzen_toestand_29_01_2016
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