[Tagging] boundary=town, place=town

Steve Bennett stevagewp at gmail.com
Sun Jan 9 23:29:08 GMT 2011

On Mon, Jan 10, 2011 at 1:25 AM, Pierre-Alain Dorange <pdorange at mac.com> wrote:
> boundary=town is not documented (and not used) and must not been used
> (IMHO), because admin_level=8 is widespread.
> According to taginfo.openstreetmap.de :
> admin_level=8
>        96 502 relations
>        290 837 ways
>        13 665 nodes (!?)
> boundary=village        30
> boundary=city_limit     53
> boundary=hamlet 37
> boundary=town   0

Actually boundary=town is 4814 :)

> i prefer far more multiples ways linked into a relation than a single
> way, because with relation we just have a build one way for frontier
> between 2 area (2 town for example) and the way can be linked into the 2
> relations (one relation per town) to define the boundary. Using only one
> way for boundary leeds to draw mutlple time boundary with same nodes ?

Ah, that's very interesting - I didn't think of that. Australian towns
tend to be very far apart, so the boundary of two *towns* rarely meet.
(Other administrative boundaries, "shires", do...)

> In this model (boundary relation) the node can be used alone, or as the
> role admin_centre of the relation.
> I think it's a powerful model and it works fine, IMHO.

Cool. So preferred tagging is:

1) Node in centre of town with place=town
2) One or more boundary ways with boundary=administrative, admin_level=8
3) Relation linking the two.

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