Yes, but again, irrelevant to this thread.

On 12/03/2018 13:44, Jo wrote:
Except of course, when the boundary is disputed, then there might be overlap and possibly even holes of no man's land?


Polyglot

2018-03-12 13:41 GMT+01:00 Dave F <davefoxfa...@btinternet.com <mailto:davefoxfa...@btinternet.com>>:

    OK, I understand what you're trying to highlight, but don't see it
    as relevant to this thread.
    But anyway, the "boundary between two countries" can be
    distinguished as they'll have two relations with boundary data
    whereas "the high seas" boundary will only have one.

    DaveF.

    On 12/03/2018 00:17, Christoph Hormann wrote:

        On Monday 12 March 2018, Dave F wrote:

                and it would not distinguish between the outer
                boundaries (towards
                the high seas)
                and the boundaries between two countries.

            Unsure what you mean. Could you elaborate, Example?

        Sure:

        https://www.openstreetmap.org/way/96104334
        <https://www.openstreetmap.org/way/96104334>

        is an outer maritime boundary at 12 mile distance from the
        baseline
        separating the territorial waters from the high seas.

        OTOH

        https://www.openstreetmap.org/way/54749533
        <https://www.openstreetmap.org/way/54749533>

        is a maritime boundary between two countries.

        You might say this difference is not of practical importance
        for data
        users but there are for example many maps which generally do
        not show
        the first type of boundary but which do show (at least partly) the
        second type of boundary.  Like this:

        http://legacy.lib.utexas.edu/maps/cia16/denmark_sm_2016.gif
        <http://legacy.lib.utexas.edu/maps/cia16/denmark_sm_2016.gif>

        You can of course determine this difference from the spatial
        relationship of the boundary relations.



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