The borders are actually based on a treaty defined by the United States when they bought the Philippine islands and are specified by coordinates. You can learn more from here: http://www.hawaii.edu/aplpj/articles/APLPJ_10.1_bautista.pdf
The problem is that those coordinates are not in WGS84 and we don't know what geodetic system was used. Here's an older discussion on this mailing list about the border: http://lists.openstreetmap.org/pipermail/talk-ph/2010-March/001876.html On Thu, Feb 10, 2011 at 4:32 AM, Ian Haylock <hayloc...@gmail.com> wrote: > Hi, > > Actually the part of the border covering the Spratly Islands has been there > for years, that's why I cant understand why no-one has finished the border > before now. > > Though it did take me hours to find that one map showing the border, maybe > everyone else just gave up looking. > > Cheers, Ian > > On Wed, Feb 9, 2011 at 11:14 PM, Eugene Alvin Villar <sea...@gmail.com> > wrote: >> >> I wonder if we'll have an edit war with neighboring countries over the >> Spratlys. :-P >> >> >> On Wed, Feb 9, 2011 at 12:38 PM, Ian Haylock <hayloc...@gmail.com> wrote: >> > Hi, >> > >> > I've just updated the Territorial border for the Philippines. >> > >> > I used the map available here : >> > http://en.wikipedia.org/wiki/File:Ph_Territorial_Map.png >> > >> > I don't know how to make this png a background in JOSM, so I just did a >> > best >> > guess for the points. >> > >> > Hopefully I haven't messed up the relation doing this. >> > >> > Hopefully now Mapfactors Navigator Free map generator should work >> > automatically. >> > >> > If you haven't tried Navigator Free, it's worth a try, map rendering is >> > much >> > faster on my GPS than Garmin Mobile XT, which keeps my GPS running at >> > 100% >> > CPU usage. >> > >> > Cheers, Ian >> > >> > P.S. >> > >> > I know, I know, I forgot to change the tag for the changeset. I tried to >> > revert the changeset then re upload it with the correct tag, but just >> > got an >> > error :-( So I left it as it is. >> > >> > _______________________________________________ >> > talk-ph mailing list >> > talk-ph@openstreetmap.org >> > http://lists.openstreetmap.org/listinfo/talk-ph >> > >> > >> >> >> >> -- >> http://vaes9.codedgraphic.com > > > _______________________________________________ > talk-ph mailing list > talk-ph@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ph > > -- http://vaes9.codedgraphic.com _______________________________________________ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
