Re: [OSM-talk] Search results for disputed territories (Nominatim)
Hi, Just wanted to let you know that you are not alone who is making an effort to understand how Nominatim database works. When I try to pull about fifty locations into an XML file with a query by the tag *int_name* either from: http://nominatim.openstreetmap.org/search/ or its mirror: http://open.mapquestapi.com/nominatim/v1/search.php it returns all but four locations. I tried to rewrite *int_name* tag for these 4 locations. Tried to rewrite again, while making sure that I use English characters. It does not help. But when I pull these objects with combination with their respective city name, it returns them all right. I am trying to figure out the reason of this issue for several weeks already. Perhaps it will just take some time to understand how Nominatim database works. It seems that it is not that simple as an SQL query to say MySQL database. The Nominatim database should be very big, and there could be some limitations, or delays, ... brgds Oleksiy On 24.11.2014 2:43, maning sambale wrote: Hi, We were informed by our national mapping agency of this concern. For a brief of background, the Philippines have several disputed islands with China one example is Scarborough Shoal [0]. The Nominatim result assigns it only to Sansha City, Hainan, People's Republic of China [1] To avoid further edit wars, we tagged the boundary as disputed territory [0] I believe the data is correct having properly tagged in an admin_level relation for both countries. Zambales, Philippines: http://www.openstreetmap.org/relation/1504691 Sansha City, China: http://www.openstreetmap.org/relation/2833102 I propose that Nominatim either display all the results or none at all (saying it is a disputed territory) to avoid confusion. Furthermore, we already informed our mapping agency of OSMF's statement regarding this matter [3]. This post is to inform the wider OSM community an seek advice on how we should best represent and show results for disputed territories. We already posted an issue to Nominatim on this matter [4]. Also, this is an appeal to connect to both PH and CN mappers not continue reverting each others edits. We are part of an international community and we should not be escalating this border issue any further into OSM. Thanks! [0] http://en.wikipedia.org/wiki/Scarborough_Shoal [1] http://www.openstreetmap.org/search?query=Scarborough%20Shoal#map=11/15.1585/117.7653 [2] http://www.openstreetmap.org/changeset/26925523 [3] http://www.osmfoundation.org/w/images/d/d8/DisputedTerritoriesInformation.pdf [4] https://github.com/twain47/Nominatim/issues/202 ___ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Search results for disputed territories (Nominatim)
2014-11-24 8:17 GMT+01:00 Frederik Ramm frede...@remote.org: It is good to start a discussion about how to properly map competing claims for regions in OSM, but at the moment our data model usually forces us to decide on one, that's why we have the on the ground rule. we can have several competing versions in our current data model, it is the data consumers and other mappers that usually expect one correct version. And we don't have nice tags to say disputed boundary, at least they do not seem to be documented: http://taginfo.osm.org/tags/boundary=disputed#overview Having more than one boundary for the same area might create confusion, but could be resolved by adding appropriate names or better references (e.g. x territory, Swiss version, where the Swiss version part could be expressed with a relation, e.g. role claimed_by and the country as a member (might create circular references ;-) ). cheers, Martin ___ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
[OSM-talk] Search results for disputed territories (Nominatim)
Hi, We were informed by our national mapping agency of this concern. For a brief of background, the Philippines have several disputed islands with China one example is Scarborough Shoal [0]. The Nominatim result assigns it only to Sansha City, Hainan, People's Republic of China [1] To avoid further edit wars, we tagged the boundary as disputed territory [0] I believe the data is correct having properly tagged in an admin_level relation for both countries. Zambales, Philippines: http://www.openstreetmap.org/relation/1504691 Sansha City, China: http://www.openstreetmap.org/relation/2833102 I propose that Nominatim either display all the results or none at all (saying it is a disputed territory) to avoid confusion. Furthermore, we already informed our mapping agency of OSMF's statement regarding this matter [3]. This post is to inform the wider OSM community an seek advice on how we should best represent and show results for disputed territories. We already posted an issue to Nominatim on this matter [4]. Also, this is an appeal to connect to both PH and CN mappers not continue reverting each others edits. We are part of an international community and we should not be escalating this border issue any further into OSM. Thanks! [0] http://en.wikipedia.org/wiki/Scarborough_Shoal [1] http://www.openstreetmap.org/search?query=Scarborough%20Shoal#map=11/15.1585/117.7653 [2] http://www.openstreetmap.org/changeset/26925523 [3] http://www.osmfoundation.org/w/images/d/d8/DisputedTerritoriesInformation.pdf [4] https://github.com/twain47/Nominatim/issues/202 -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Search results for disputed territories (Nominatim)
Hi, On 11/24/2014 02:43 AM, maning sambale wrote: I believe the data is correct having properly tagged in an admin_level relation for both countries. Including a closed way in several disjunct admin relations is not usually considered correct in OSM. It might represent a correct recording of different claims to the feature but it breaks a number of assumptions that writers of tools tend to make. It is good to start a discussion about how to properly map competing claims for regions in OSM, but at the moment our data model usually forces us to decide on one, that's why we have the on the ground rule. Technically, one would perhaps have to invent new relation roles for that - the Scarborough Shoal would have to be a member of Sansha City not in the role outer but something like disputed_outer. Which of course is not understood by any software at the moment! Also, this is an appeal to connect to both PH and CN mappers not continue reverting each others edits. We are part of an international community and we should not be escalating this border issue any further into OSM. DWG has been involved in a couple of edit wars in the region and anyone tempted to edit names or boundaries in the South China Sea and *especially* regarding the Paracel Islands, Sansha, or the Nine-dotted line, please don't, and contact d...@osmfoundation.org instead. Bye Frederik -- Frederik Ramm ## eMail frede...@remote.org ## N49°00'09 E008°23'33 ___ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
