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On 31.08.2010 20:58, David Earl wrote:
<blockquote cite="mid:4C7D50E3.6070301@frankieandshadow.com"
type="cite">Just to throw something else into this discussion...
<br>
highway=steps
<br>
It doesn't (or at least, isn't documented as) have direction, but
_could_ have in the same way as rivers (direction of way is down
the steps, say).
<br>
</blockquote>
To quote the wiki: (<a class="moz-txt-link-freetext" href="http://wiki.openstreetmap.org/wiki/Steps">http://wiki.openstreetmap.org/wiki/Steps</a>)<br>
"<a
href="http://wiki.openstreetmap.org/wiki/Talk:Tag:highway%3Dsteps"
title="Talk:Tag:highway=steps">Discussion</a> whether the <b>direction
of the way</b> should point up- or downhill is so far been
inconclusive. It's possible to tag this explicitly using <tt
style="background-color: rgb(224, 224, 240); white-space: pre;"
dir="ltr"><a href="http://wiki.openstreetmap.org/wiki/Key:incline"
title="Key:incline">incline</a>=<a
href="http://wiki.openstreetmap.org/wiki/Tag:incline%3Dup"
title="Tag:incline=up" class="mw-redirect">up</a></tt> or <tt
style="background-color: rgb(224, 224, 240); white-space: pre;"
dir="ltr"><a href="http://wiki.openstreetmap.org/wiki/Key:incline"
title="Key:incline">incline</a>=<a
href="http://wiki.openstreetmap.org/wiki/Tag:incline%3Ddown"
title="Tag:incline=down" class="mw-redirect">down</a></tt>. An
alternative unofficial way has been to use <tt
style="background-color: rgb(224, 224, 240); white-space: pre;"
dir="ltr"><a
href="http://wiki.openstreetmap.org/wiki/Key:direction"
title="Key:direction">direction</a>=<a
href="http://wiki.openstreetmap.org/wiki/Tag:direction%3Dup"
title="Tag:direction=up" class="mw-redirect">up</a></tt> or <tt
style="background-color: rgb(224, 224, 240); white-space: pre;"
dir="ltr"><a
href="http://wiki.openstreetmap.org/wiki/Key:direction"
title="Key:direction">direction</a>=<a
href="http://wiki.openstreetmap.org/wiki/Tag:direction%3Ddown"
title="Tag:direction=down" class="mw-redirect">down</a></tt>,
which are equivalent to the incline tags."<br>
<br>
I think, incline and direction are both accepted and widely used; I
often tag both to make it useful to as much applications as
possible.<br>
But there is nothing like "steps are always drawn in direction from
low to high" - at least that's not documented.<br>
<blockquote cite="mid:4C7D50E3.6070301@frankieandshadow.com"
type="cite">
Some other things that might have natural "flow" or
"directionality": cable cars, ski runs, power lines, pipelines,
slipway, pier, military range, racecourse, athletics track
<br>
<br>
Incidentally, direction of flow for waterway=canal doesn't work on
the summits and troughs of a locked canal, but that's probably
being pedantic.
<br>
<br>
Coastline and boundaries most definitely use way direction in
their semantics.
<br>
<br>
David
<br>
<br>
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<br>
<br>
</blockquote>
<br>
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