On 12/2/08, Steve Singer <[EMAIL PROTECTED]> wrote: > I think I now have enough content at > http://wiki.openstreetmap.org/wiki/Geobase_NHN_-_OSM_Map_Feature for some > other eyes to look at it. > > I've described the major hydro network entities that I think we are > interested in. I've also taken a stab at some attribute mappings but I > could use some help with coming up with the appropriate OSM attributes for > many things. > > I also think we need to think about/discuss how/if we want to model > > Water flow direction > --------------------- > The Geobase 'Network Linear Flow' entities describe the direction water > flows in. We need to decide if this is worth importing into OSM and how. The > wiki page for Key:waterway recommends that the ways point downstream, but > the wiki page is unclear how waterway would be applied to an area. > > Do we try to extract waterflow and apply it to the direction? Do we create a > separate 'flow' way like geobase does? Or do we ignore waterflow direction?
Well, I know there has been concern expressed re: doing nautical chart level mapping (i.e.: who is liable if a mega-$$ yacht runs aground due to bad chart/map data). On the other hand I can see value to the likes of kayakers in noting stream direction, at least where there is a consistant stream direction (in some tidal areas water flow directions can get ... strange). > Junctions > ----------- > > The geobase data has entities called 'hydro junctions' that describe how two > features are joined. How do we want to model this in OSM? > > > Steve _______________________________________________ Talk-ca mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-ca
