On 8 Feb 2008, at 10:39, David Groom wrote: > The proposed tag waterway = river, > http://wiki.openstreetmap.org/index.php/Proposed_features/ > Large_rivers , has > been at proposal stage for over 18 months, which seems far too long > for a > tag which represents such an important feature. > > The main problem area seems to be that some people do not like the > current > proposal whereby a river is divided up in to separate closed areas.
Representing features (like rivers) as well-formed closed polygon sounds good to me. > The > reason being that the "segment" crossing the river to close the > area marks a > boundary which does not actually exist. Discussion on this could > go on > indefinitely, but it does really need a Mapnik "expert" to either > (i) see if > there is a way that Mapnik can render areas which are not closed (ie. > comprised of two parallel ways), Of course there is a way, but I'm not convinced at all we should take this approach. > or (ii) if this is not , and will never be, > possible then to state that fact , and we can then have a tag > proposal which > will render in both Mapnik and [EMAIL PROTECTED] We can make osm2pgsql or coastline tools to create polygons, but why not create them in the first place ? Can someone enlighten me, please ? > > The main issue in practice is we now have no standard way of > tagging rivers, > and people are relatively free to do what they like, with the > result that > large portions of the River Thames disappeared from the Mapnik layer > recently > http://www.informationfreeway.org/? > lat=51.49&lon=0.41&zoom=11&layers=0000F0B0F As a short term solution we can replace problematic coastline tile in London (100x100km vectors) with old one, I guess. > > David > Artem > > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
