On 06/05/2016 14:03, Marc Gemis wrote:
there is already a proposal:
http://wiki.openstreetmap.org/wiki/Proposed_features/DisputedTerritories

m.


Well, there's a wiki page, but among other things it says "If, you feel cappabale to invent a tag system for such purposes, edit this page", so it's certainly not a complete proposal yet.

What I suspect would be really useful would be a summary of how people handle disputed boundaries in OSM around the world, and the reasoning behind what they have done. Sometimes admin_level=3 is used, sometimes it isn't (and confusingly sometimes admin_level=3 is used for _non_disputed boundaries elsewhere.

I can try and put together the reasoning behind the current tagging where I've been involved on behalf of the Data Working Group, such as Kosovo, - giving a summary of the parties involved (often there are more than 2 sides to a dispute, and not all of them may be active in OSM), the state of the ground itself and how it fits with http://wiki.osmfoundation.org/w/images/d/d8/DisputedTerritoriesInformation.pdf , and which of the resulting entities are "countries"** in any normally understood sense.

Its also worth mentioning the "International Boundaries" sub-forum http://forum.openstreetmap.org/viewtopic.php?id=53173 , which is where most discussions of this sort of thing take place. I'd suggest that any attempt to fix boundaries should at the very least be mentioned there, if only to avoid it getting reverted as suspected vandalism.

Most of the reports that the DWG gets about this sort of thing are inherently partisan, as are most of the help questions about it (e.g. https://help.openstreetmap.org/questions/49587/indias-administrative-boundary-issue ). It can be really difficult to separate loud but unrepresentative voices from the actual situation on the ground.

The problem with answering Rory's original question directly is that in OSM we try and "map what's on the ground", and don't map stuff that's never going to happen (for example, if a village thinks that it'd be really nice if there was a bypass around it, but there's no concrete proposal, no funding and no likelihood of it happening, we don't map that bypass). A number of territory claims are for national historic pride reasons only and are unlikely ever to result in any changes to actual administrative boundaries*. There are various examples of how people represent mutually incompatible facts to different groups of people - here's one for some areas around Russia http://www.openstreetmap.org/user/Zverik/diary/21463 , and here's a description of a similar process for India http://www.openstreetmap.org/user/PlaneMad/diary/38176 . At the data level both of these seem to be "get the data fro OSM, munge it in some way with some external data, and use that". I'm sure there are more examples, and it'd be helpful to gather them together.

Best Regards,

Andy

* such as http://www.manchestereveningnews.co.uk/news/greater-manchester-news/war-of-the-roses-row-erupts-as-yorkshire-688659 (Saddleworth was historically in Yorkshire in England but is now administered from the west rather than the east). I use Saddleworth as an example because (a) I'm from Yorkshire and know something about it and (b) it's thankfully less politicised than other similar disputes - no one is getting killed.

** there's a famous Frank Zappa quote http://www.brainyquote.com/quotes/quotes/f/frankzappa134155.html . Obviously that's fairly flippant, and "needing a beer" works well in Western places but less well elsewhere, but some of the questions ("is there a national sports body that e.g. organises football matches against other national sports bodies?" "are there companies based there that pay taxes and support local infrastructure there") do help define what we mean by "country".


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