Hello David, > The reasoning for me is, imagine they wanted to claim a foul. If one > map gives the name as "lye street" while it's actually called "foot > street" to catch copyright infringement, you see on the other map that > there's a discrepancy.
I pretty sure that all road maps in South Africa have a number of common ancestors, such as the Chief Directorate : Surveys and Mapping, municipalities and perhaps even the sketches indicating property rights. With the exception of the last one, they can all have "trap streets" and those trap streets will then appear in all derivative maps. I've made a list of the (potential) ones I found. Since then many web sites (Google etc) improved their street level coverage. So it's now possible to make a proper comparison. http://wiki.openstreetmap.org/wiki/Catalog_of_Errors#South_Africa I heard that only cartographic features can be copyrighted, like emphasizing or deemphasizing bends in the road. And that may mean that many trap streets cannot be copyrighted. But the spirit of OSM has never been to perform large scale copying without consent from the owner of the data. Users should only copy a few things that they have a personal interest in, like PoIs along the route they intend to travel. >> The other difficulty is with road classifications. At present, I am >> tagging all roads in urban areas as highway:tertiary except for roads in >> residential areas, which are highway:residential. I am tagging dirt >> roads that are main roads (Dxxx) as highway:secondary and >> surface:unpaved, while farm roads are highway:track with >> tracktype:gradex. National routes (N2) as either highway:motorway or >> highway:trunk depending on whether there is a median present. Other main >> routes (R102, R620 etc) as highway:primary, and other named main roads >> (not Rxxx routes) linking towns as highway:secondary. Does this make sense? > > I recently found out that "highway:unclassified" is actually a valid tag > (thanks, Nic!) for a road that doesn't have a route number, but isn't a > residential street. > >> Also, what is the convention regarding ref:* and name:* tags? What I >> have done is use the ref tag for the Nx, Rxxx or Dxxx name, and the name >> tag for the descriptive name. For example, the R620 is called Marine >> Drive along most of the south coast, so then that is ref:R620 and >> name:Marine Drive, but for a section around Margate it splits into 2 >> roads, where one is name:Marine Drive running through town, and ref:R620 >> goes around. > > Your way of tagging seems fine to me, but I'm also still a bit new here. > >> I'm pleased to be able to help, but want to make sure I am doing this >> correctly! > > That's the spirit! The nice thing about this kind of project, though, > is that if you make a mistake, it can be fixed. > > -- > David Richfield > e^(pi)+1=0 > > > > -- > David Richfield > e^(πi)+1=0 > > _______________________________________________ > Talk-ZA mailing list > Talk-ZA@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-za > _______________________________________________ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
