[talk-au] Admin level boundaries

cleary osm at 97k.com
Sat Mar 26 01:20:25 UTC 2016


Nev

I have added some of those boundaries. Where the administrative boundary
and the national park boundary share exactly the same way, I have used
that single way and included it in two separate relations, one for the
administrative area and the other for the national park.  If the admin
boundary is not the exact park boundary, then separate ways need to be
used. 

I find that having two separate ways but with one superimposed one on
the other makes it more difficult to work out where any problems are and
more difficult to edit later, if required. It has been my understanding
that it is best practice to use the one way for multiple relations, if
applicable. This is usually easiest to edit and renders exactly
correctly.

In NSW, administrative boundaries frequently align exactly with sections
of national park boundaries, apparently deliberately. If we had separate
ways for each, I think there would be a lot of messy duplication on the
map.






On Fri, Mar 25, 2016, at 12:25 PM, Nev Wedding wrote:
> There have been many new admin_level=10 administrative boundaries added
> in NSW recently. 
> Are we expected to split and use these as shared sections for the sides
> of national park multipolygons, etc.
> Or is it preferable to leave the admin_level=10 (and other admin levels) 
> alone and separate. 
> 
> I assume they are best left separate so that they can be more easily
> updated later. 
> 
> Tag:boundary=administrative
> https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative
> _______________________________________________
> Talk-au mailing list
> Talk-au at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-au



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