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). -- Christoph Hormann http://www.imagico.de/ _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
