<html><head></head><body>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."<br>
<br>
<br><br><div class="gmail_quote">On August 14, 2014 6:35:52 AM CDT, John Packer <john.packer7@gmail.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="ltr"><div><div>One question.<br />How would people map a cave?<br /></div>As far as I know, GPSes don't really work underground, and obviously there is no sattelite imagery for them.<br /></div>I imagine that's why there is no scheme right now.<br />
<br /></div><div class="gmail_extra"><br /><br /><div class="gmail_quote">2014-08-14 8:22 GMT-03:00 André Pirard <span dir="ltr"><<a href="mailto:A.Pirard.Papou@gmail.com" target="_blank">A.Pirard.Papou@gmail.com</a>></span>:<br />
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>On 2014-08-14 12:31, Martin Vonwald
wrote :<br />
</div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">2014-08-14 12:25 GMT+02:00 André
Pirard <span dir="ltr"><<a href="mailto:A.Pirard.Papou@gmail.com" target="_blank">A.Pirard.Papou@gmail.com</a>></span>:<br />
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>On 2014-08-14 11:08, Janko Mihelić wrote :<br />
</div>
<div>
<blockquote type="cite">
<div dir="ltr">
<div>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.<br />
</div>
</div>
</blockquote>
</div>
Obviously? Regarding paths and waterways, especially
ones fitted up for tourism, I wonder...<br />
</div>
</blockquote>
</div>
<br />
</div>
<div class="gmail_extra">Maybe not completely obvious, but I
would agree with Janko. In my opinion, a "tunnel" is man-made,
while a "cave" is not.<br />
</div>
</div>
</blockquote>
<br /></div></div>
"tunnel" is an attribute of an object called "highway", including
the paths in question.<br />
"cave:NNN=*" are attributes of objects "<tt style="background-color:#dde;white-space:pre-wrap" dir="ltr"><a href="http://wiki.openstreetmap.org/wiki/Key:natural" title="Key:natural" target="_blank">natural</a>=<a href="http://wiki.openstreetmap.org/wiki/Tag:natural%3Dcave_entrance" title="Tag:natural=cave entrance" target="_blank">cave_entrance"</a></tt>,
obviously speleology and not path oriented.<br />
"cave=*" is not defined.<br />
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.<br />
<br />
This said, we could wait for years for a rendering of cave=yes, let
alone routing support.<br />
Rendering and routing don't care if it's man-made or not. They just
work or don't.<br />
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?<span class="HOEnZb"><font color="#888888"><br />
<br />
</font><font color="#888888">
</font><table><tbody><tr><td>André.</td></tr></tbody></table>
<br />
<br />
<br />
</span></div>
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