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<div class="moz-cite-prefix">On 2014-08-14 13:35, John Packer wrote
:<br>
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<div>One question.<br>
How would people map a cave?<br>
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It depends on your definition of "how" but <a
href="http://www.mondesauvage.be/grottes/fr/">this could be an
answer</a>.<br>
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<div>As far as I know, GPSes don't really work underground, and
obviously there is no sattelite imagery for them.<br>
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"routing" was obviously a free bonus, but please notice that you
don't really need a GPS signal (or device) to follow a route drawn
on a map. You don't even need to enter the cave if all you want is
measure the length of one or several circuits. GPS lack is the
problem of tracking the route.<br>
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<div dir="ltr">I imagine that's why there is no scheme right now.<br>
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<div class="gmail_quote">2014-08-14 8:22 GMT-03:00 André Pirard
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:A.Pirard.Papou@gmail.com" target="_blank">A.Pirard.Papou@gmail.com</a>></span>:<br>
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<div>On 2014-08-14 12:31, Martin Vonwald wrote :<br>
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<div class="gmail_quote">2014-08-14 12:25
GMT+02:00 André Pirard <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:A.Pirard.Papou@gmail.com"
target="_blank">A.Pirard.Papou@gmail.com</a>></span>:<br>
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<div>On 2014-08-14 11:08, Janko Mihelić
wrote :<br>
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<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>
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Obviously? Regarding paths and waterways,
especially ones fitted up for tourism, I
wonder...<br>
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<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>
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"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 moz-do-not-send="true"
href="http://wiki.openstreetmap.org/wiki/Key:natural"
title="Key:natural" target="_blank">natural</a>=<a
moz-do-not-send="true"
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>
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<td>André.</td>
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</font></span><br>
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