On 24 November 2011 13:38, Craig Wallace <[email protected]> wrote: > On 24/11/2011 15:33, Alexandros Papadopoulos wrote: >> >> Hello. >> >> I am mapping the islands of the Salar de Uyuni >> (http://osm.org/go/NK_7Jv--) as I found it particularly annoying they >> were not on the map when I needed this information. >> >> The one island that *was* already mapped >> (http://www.openstreetmap.org/browse/way/43540410) was tagged with >> natural=land which seems to be deprecated. >> >> For this case (a salt flat), I have been using natural=coastline and >> place=island/islet. Is this OK? > > No - islands within the sea should be tagged with natural=coastline, but not > islands within inland water, eg lakes/ponds/rivers. > That Salar de Uyuni is tagged as natural=water, so it counts as inland > water, and is equivalent to a lake or pond. > > Islands in inland water need to mapped with multipolygon relations. ie map > the island as an area, and add it to a multipolygon relation with role > "inner", and add the outline of the lake to the relation with role "outer". > I see that Isla Incahuasi is already mapped with a multipolygon relation, so > you can add all of the other islands to the same relation, with role inner > for each. > > There is no need to tag the islands with natural=land. It is more useful to > tag what is actually there. eg if the island is covered with trees then tag > it with natural=wood, or if its a beach tag it as natural=beach etc.
Thanks Craig. So to sum up: 1. Mark the island as an area. 2. Add any useful designations (natural=beach etc) 3. Add to multipolygon relation. I have attempted to do just that for the 20odd islands I can see on Bing aerial photography, hope I did the right thing. Cheers Alex _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
