Dear Ian, I personally appreciate your province relations effort as I am currently testing a new algorithm for garmin map that utilizes boundary relations to assign address info to streets. Getting the correct admin boundaries for towns/cities is the holy grail of geodata and your work is great start.
On Mon, Mar 28, 2011 at 5:33 PM, Ian Haylock <[email protected]> wrote: > Hi, > > Well anyone who wishes can reverse the changeset where I moved the boundary. > It bothers me not :-) > > Am I the only one who can see the similarity between the shape of the border > and the shape of the river ? > > Still unless we get a good source of municipal boundaries, I'm finished with > boundaries now. Back to error fixing and tracing images. > > Oh, maybe I'll check the boundaries in Manila that I haven't checked yet, but > I need a break from boundaries for a while. > > Cheers, Ian > > > --- On Mon, 28/3/11, maning sambale <[email protected]> wrote: > >> From: maning sambale <[email protected]> >> Subject: Re: [talk-ph] Provincial relations ( no not your far away relatives >> :-) ) >> To: "Eugene Alvin Villar" <[email protected]> >> Cc: "Ian Haylock" <[email protected]>, "OpenStreetMap Philippines" >> <[email protected]> >> Date: Monday, 28 March, 2011, 5:36 >> Unless we have very good reference, >> using rivers as boundaries is not >> always a good choice. The post-ondoy imagery from >> Bing shows that a >> lot of river tributaries have changed already: >> http://www.openstreetmap.org/user/maning/diary/13191 >> >> On Sun, Mar 27, 2011 at 11:35 PM, Eugene Alvin Villar >> <[email protected]> >> wrote: >> >>> 4. When you moved the QC-Rizal boundary to >> Marikina River >> >>> (which I'm >> >>> not sure is really correct) >> >> >> >> Well it seemed more logical, as lots of the >> boundaries seem to follow rivers and streams. >> > >> > While it seems logical, it's not always the case. Many >> boundaries >> > don't follow any natural feature. Quezon City's map >> > <http://www.quezoncity.gov.ph/index.php?option=com_content&view=article&id=141&Itemid=16> >> > suggests that the boundary in that area is a straight >> line and not the >> > Marikina River. This map of neighboring San Mateo >> > ,http://www.batangsanmateo.com/map/index.htm> also >> suggests that the >> > boundary is a straight line. >> >> >> >> -- >> cheers, >> maning >> ------------------------------------------------------ >> "Freedom is still the most radical idea of all" -N.Branden >> wiki: http://esambale.wikispaces.com/ >> blog: http://epsg4253.wordpress.com/ >> ------------------------------------------------------ >> > -- 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 [email protected] http://lists.openstreetmap.org/listinfo/talk-ph
