[Tagging] Mapping cave tunnels passable by human

[John F. Eldredge]

Plus, our mapping scheme is limited in its ability to record three-dimensional spaces. I don't know how we would map "this is one continuous passage, but with a deep pit in the center, so you will need special equipment to bridge the gap."



On August 14, 2014 6:35:52 AM CDT, John Packer <john.packer7 at gmail.com> wrote:
> One question.
> How would people map a cave?
> As far as I know, GPSes don't really work underground, and obviously
> there
> is no sattelite imagery for them.
> I imagine that's why there is no scheme right now.
> 
> 
> 
> 2014-08-14 8:22 GMT-03:00 André Pirard <A.Pirard.Papou at gmail.com>:
> 
> >  On 2014-08-14 12:31, Martin Vonwald wrote :
> >
> >  2014-08-14 12:25 GMT+02:00 André Pirard <A.Pirard.Papou at gmail.com>:
> >
> >>  On 2014-08-14 11:08, Janko Mihelić wrote :
> >>
> >>  Well first, tunnel=yes is obviously wrong. We need to replace this
> with
> >> cave=yes. Other than that, I have no problems with this. If a cave
> has two
> >> cave entrances, then information that they are connected by
> footpaths is
> >> valuable information.
> >>
> >>  Obviously?  Regarding paths and waterways, especially ones fitted
> up for
> >> tourism, I wonder...
> >>
> >
> >  Maybe not completely obvious, but I would agree with Janko. In my
> > opinion, a "tunnel" is man-made, while a "cave" is not.
> >
> >
> > "tunnel" is an attribute of an object called "highway", including
> the
> > paths in question.
> > "cave:NNN=*" are attributes of objects "natural
> > <http://wiki.openstreetmap.org/wiki/Key:natural>=cave_entrance"
> > <http://wiki.openstreetmap.org/wiki/Tag:natural%3Dcave_entrance>,
> > obviously speleology and not path oriented.
> > "cave=*" is not defined.
> > I know I still have to learn that OSM is fuzzy, but using "cave=yes"
> for
> > paths would first need a definition of it in the "highway=*"  page.
> >
> > This said, we could wait for years for a rendering of cave=yes, let
> alone
> > routing support.
> > Rendering and routing don't care if it's man-made or not. They just
> work
> > or don't.
> > Why not use the well established tunnel=yes and layer=-n?  And cope
> with
> > the subjective, cultural, etc. strangeness with an adorning cave or
> > whatever made up tag?
> >
> >   André.
> >
> >
> >
> > _______________________________________________
> > Tagging mailing list
> > Tagging at openstreetmap.org
> > https://lists.openstreetmap.org/listinfo/tagging
> >
> >
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20140814/aa63aeb6/attachment-0001.html>