Hi. My 2c.
It seems like there are a few issues here: 1 - The current mapnik style does not identify unpaved roads at all. 2 - For an unpaved road, the quality of the surface can vary a lot, and it would be good to have a way to tag this. 3 - Some roads require a 4WD. This can be a legal requirement, or just common sense based on the surface. If you need a 4WD, you want to know this in advance. While these are all related, maybe addressing them separately is the way to go. Starting with 1 would be a good change simply using surface=unpaved. A trac ticket would be the way to go. Suggest a dashed style in some way. For 2, this is tricky, as this will be subjective at some level. It seems it might be hard to get agreement on a way to do this. Obviously 2 relates to 3. Maybe start with a rendering change for roads that need 4WD legally (using existing tags), and work on defining a way to handle when 4x4 is advisable. - Ben. On Nov 13, 2012 10:32 AM, "David Bannon" <dban...@internode.on.net> wrote: > > OK, I have to recognise that my "proposed proposal" is not attracting any > support. So I will walk away. However, that leaves the problem unsolved and > , I still think, dangerously so. > > Are there any alternatives folks ? Should we (ie in Australia) encourage > people to use smoothness= for example ? I hate the tag name and the values > associated with it but maybe its the only game in town ? There are already > considerably more horrible, very_horrible and impassable values set against > smoothness than 4wd_Only tags and by a considerable factor. It does offer > a degree of "fine grain" against 4wd_only's 'yes' or not there. > > However, (eg) OSM website map ignores smoothness= (unlike tracktype) but > that may be becuse not enough people are complaining about it. But I must > say, I would not feel anywhere near as confident asking renderers about > smoothness= as I would about an extended tracktype=. > > Please consider.... > > David, > > ----- Original Message ----- > From: > "Andrew Harvey" <andrew.harv...@gmail.com> > > > > This is a complete failure of the cartography and if it represented > > unpaved vs paved as dotted casing then I would have been prepared and > > expecting the surface change along the road. > > Indeed, but as long as mappers present the renderers with a mismash of > data, we can expect no better ! > > > http://wiki.openstreetmap.org/wiki/Tagging_for_the_renderer > > No, I don't really think my proposal fits into this catagory, but it does > take a more pragmatic view than many OSMs would. I understand it may well > be too pragmatic ! > > > > I think your extension proposal make is more complicated as it is > > unclear what the scale represents since it isn't a linear scale for one > > attribute. > > well, in that case, I think I have failed. My plan was always to seek the > simplest way through a very complicated maze. If its still not simple > enough, so be it ! > > > .... We have, > http://wiki.openstreetmap.org/wiki/Key:surface > http://wiki.openstreetmap.org/wiki/Key:tracktype > http://wiki.openstreetmap.org/wiki/Key:smoothness > http://wiki.openstreetmap.org/wiki/Proposed_features/surface_unification > http://wiki.openstreetmap.org/wiki/Proposed_features/usability > http://wiki.openstreetmap.org/wiki/Proposed_features/mtb:scale > http://wiki.openstreetmap.org/wiki/Key:trail_visibility > http://wiki.openstreetmap.org/wiki/Key:Sac_scale > http://wiki.openstreetmap.org/wiki/Tag:4wd_only%3Dyes > > Only useful use of surface= is unpaved. I have tried and failed with > tracktype=, the 'proposed' ones mentioned above are all either abandonded > or should be. mtb is about mountain bikes and so on. we are really not > addressing this problem folks ! > > > Although this issue does affect Australia due to the nature of the > > outback, it is a global issue. I think it would be best to take your > > thoughts to the global tagging list at let the discussion happen there. > > No, to be realistic, if I cannot get any support here in Oz, little hope > of doing so elsewhere. > > Sorry about any awkard editing here, using an android device as I am away > and left my laptop powersupply at home! > > David > > > _______________________________________________ > Talk-au mailing list > Talk-au@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-au > >
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