[OSM-talk] England, Wales, Scotland borders
peter.miller at itoworld.com
Sun Oct 4 10:14:54 BST 2009
On 4 Oct 2009, at 08:12, Igor Brejc wrote:
> For days now I've been trying to figure out how I could render borders
> between England, Wales and Scotland using OSM data, but I keep
> into same issues. Frankly, I think the way these things are tagged
> in UK
> is a mess (I don't know what the situation is in other places):
> 1. Borders between these countries are tagged with the same
> admin_level=4 as that of subdivisions inside England (example:
> North East England, http://osm.org/go/evykef-?relation=151164).
> Now I'm not a constitutional expert, but I think Wales and
> Scotland represent different level of territorial division than
> just a collection of England's counties. And anyway, the
> states level 4 is used for "England/Scotland/Wales border" and
> doesn't mention anything else.
> 2. There is no way to render JUST land borders. Maritime borders
> (territorial waters) are tagged exactly the same way as their
> continental counterparts. And even if you accept this limitation
> and decide to render territorial waters they are usually cut off
> in the available UK OSM extracts.
> 3. England's coast is also tagged as a border, but Wales' and
> Scotland's isn't.
> Please take my criticism as a constructive one. I'm trying to use OSM
> data in a real-life situation and I think borders are some of the more
> important data, since they are usually visible in smaller-scale maps
> (but usually _without_ marked territorial waters). The way UK's
> are now tagged, the only way to render them usefully would be to
> manually collect a list of OSM ways' IDs.
> Of course I could go and edit these things myself, but since I'm not
> usually covering this part of the world, I don't want to step on other
> people's toes :)
I have cross-posted this to talk-gb and I suggest that we continue the
We certainly need to use different levels for the UK and england/
scotland/wales but as always with borders it is a bit sensitive about
how one does it. Is Scotland a 'country' or a 'region' etc.
> Best regards,
> talk mailing list
> talk at openstreetmap.org
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