[OSM-talk-ie] Coastal Rocks and Boundaries

[Rory McCann]

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Hi Conor,

On 07/12/14 10:40, Conor Jones wrote:
> + County Donegal: http://www.openstreetmap.org/relation/283732 +
> County Donegal: http://www.openstreetmap.org/relation/4085165
> (seems to be 2 for each county?)

Those 2 relations have different admin_levels. admin_level=6 is the
"traditional"/"common" understanding of "county". i.e. there are 32 in
the island of Ireland. admin_level=7 is for the things like "Dublin
City Council"/"Fingal County Council", where as the admin_level=6
would be "Co. Dublin".

*But* in some places, there's no difference. So initially there was
only the admin_level=6. But I think Boggedy started duplicating them
to admin_level=7's. Which makes sense, if you think of the
admin_level=7's as the county council areas.

NB: county councils are changing soon, so this might change, I dunno.
You can see admin_level's on this map: http://layers.openstreetmap.fr/

> Should a sea-rock tagged as coastline be included in all the
> above?

If it's part of the "coastline" of Ireland, I'd say yes.

> Then there's the newer boundaries currently being worked on...
> townlands and parishes (and eventually baronies and ED's) What is
> the consensus here? Should a sea-rock be included in the townland 
> and then the parish it would appear to be sitting of from? Some
> larger rocks are actually marked with ARP data on the TCD sheets...
> not necessarily as a townland but certainly recognised all the
> same

Small islands off the coast are not usually included in townlands,
they are "townland-less". They often are in civil parishes and
counties. Hence I'd presume rocks would be similar to townlands in
this sense...

Rory
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