[OSM-talk] Proper tagging of multi-admin_level borders (Was: National borders in the British Islands)

Dylan Semler dylan.semler at gmail.com
Wed Jun 18 04:53:04 BST 2008


On Fri, May 30, 2008 at 11:27 AM, Martijn van Oosterhout <kleptog at gmail.com>
wrote:
>
> - admin_levels nest, so that the area covered by an admin_level=X is
> also covered by areas with admin_level > X
>
>
I just want to verify that I interpret this correctly because I haven't
found it documented anywhere on the wiki.  What is the proper tagging
prodecdure for high-level borders like country borders that are also borders
of states, provinces, counties, etc.?

I can imagine the following options:
a) One way tagged with the lowest number (highest administrative border)
b) One way tagged with several admin_levels, one corresponding to each
border that is present
c) Several ways on top of each other, each tagged with one admin_level
d) other?

I think (a) is the cleanest and can still offer all of the necessary
information.  What is the concensus?

-- 
Dylan

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