Finally re-visited Marikina city and barangay boundaries. Please check if I made the correct relation tags. City boundary: http://www.openstreetmap.org/browse/relation/146949 Barangay boundary: http://wiki.openstreetmap.org/wiki/Metro_Manila/Boundary_Relations#Marikina
On Thu, May 28, 2009 at 10:24 PM, Eugene Alvin Villar <sea...@gmail.com> wrote: > On Thu, May 28, 2009 at 12:09 PM, maning sambale > <emmanuel.samb...@gmail.com> wrote: >> >> > Having the internal boundaries is actually a con. The boundary of >> > Marikina >> > is its borders with other entities (like Pasig and Antipolo). The >> > internal >> > "boundaries" are more properly boundaries of the barangays, not of >> > Marikina >> > itself. >> Not entirely, IMO >> A barangay (which I treat as a single polygon unit) is within a >> municipality (a collection of barangay polygons) which is within a >> province (a collection municipality polygons) with a few exceptions of >> course and so on and so forth. > > Ah, now I see where you're coming from. > > I agree that the barangays of Marikina are part of Marikina and that > Marikina is part of Metro Manila and so on. But we are talking about > boundaries here (relation type=boundary), i.e., land area perimeters, not > the land area itself. That's why I think that the internal borders shouldn't > be counted. > >> > In addition, because these internal boundaries are included in the >> > relation, >> > they are being drawn as admin_level=6 (per the relation tag) in Mapnik, >> >> This is a rendering problem. >> >> > though the presence of area=yes seems to mess things up. >> I think I removed them in Marikina >> >> let's discuss this more. >> >> PS/OT: >> Incidentally, at work, I'm looking at using the NCSB codes for >> codifying provincial polygons. Does anybody use this at all? > > I think we can use the NSCB Philippine Standard Geographic Codes to refer to > the various administrative units. Maybe as ref=* tags? We can also use the > ISO 3166 codes for int_ref=*. > > -- cheers, maning ------------------------------------------------------ "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ ------------------------------------------------------ _______________________________________________ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph