Thanks to Yves for pointing out the maritime tag.
I may be missing something, Christoph, but doesn't a combined search for
admin_level=X & maritime=yes remove any misuse of the maritime tag &
produced the required solution?
DaveF
On 10/03/2018 19:16, Christoph Hormann wrote:
On Saturday 10 March 2018, Dave F wrote:
If Matthijs wishes to distinguish between boundaries at sea (a good
idea, I believe) then a *unique* tag should be added to those ways.
Note independent of the subject of this thread the tag maritime=yes -
which is what is proposed to be used for determining the border style
in the map - is somewhat ill defined. There are a number of different
types of borders that are widely tagged with this (though not all of
them universally):
* the outer limits of the territorial waters of a country towards the
high seas (usually 12 miles from the baseline). This is the original
declared purpose of maritime=yes and these are very often tagged this
way if other boundary tags exist on the way (boundary=administrative +
admin_level=2) - see also wambacher's illustrations - boundaries
missing there have usually none of the tags in question.
* admin_level 2 boundaries between two countries over maritime water.
These are usually also tagged maritime=yes.
* the outer limits of higher level administrative units towards the
ocean - which can be either at a certain distance from the baseline
(like in the US) or at the coastline (like in Danmark or France -
although technically this is typically the low tide line while the
coastline is at the high water line). These are not universally tagged
with maritime=yes (not commonly for example in Italy, Spain, Mexico and
Iran).
* The US - Canada border in the Great Lakes (which is a clear misuse of
the tag).
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