Tim<br>Welcome to OpenStreetMap.<br><br><div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><span style="font-weight: bold;">
Foreign/dual language conventions:</span><br>
However, I've discovered that there are no GPX files uploaded, no OSM
data or examples which might demonstrate how to approach the problem of
usign non-western character set in the naming of roads and streets. Do
I <br>
<ul>
<li>use the thai font name, Englisg transliteration (which could be spelled several ways), </li>
</ul>
<ul>
<li>uae a JOSM second language class so I can have both English and Thai. </li>
</ul>
This prtoblem must also exist in Russian/Greek language maps - what is the best solution?</blockquote><div><br>There was discussion about this on the list recently: <a href="http://lists.openstreetmap.org/pipermail/talk/2007-January/010597.html">
http://lists.openstreetmap.org/pipermail/talk/2007-January/010597.html</a><br> </div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><span style="font-weight: bold;">
Elevated Highways:</span><br>
Bangkok is a mess of elevated highways, one built directly above an
existing roadway. Often, the upper deck is a toll road. I am assuming I
should be using layers to put the two roads on the same geospace.<br>
<br>
The questions are:<br>
<ul>
<li>how do you code/mark up the ramps between the two layers, ie, how
does a SatNav system differentiate between an off-ramp, and a spur
which is not as yet built (we have those too). Guiding a car to a 50'
drop instead of a gentle ramp is something best avoided.</li></ul></blockquote><div><br>For rendering purposes an up-ramp should comprise of two ways. The first should have layer=0 and be connected to the lower road. The second layer=1 and be connect to the upper deck. The join in the middle will be rendered seamlessly providing the two parts are not at an acute angle.
<a href="http://wiki.openstreetmap.org/index.php/Osmarender#Layers">http://wiki.openstreetmap.org/index.php/Osmarender#Layers</a> explains it a little more.<br><br>I don't know whether this is sufficient for navigation purposes.
<br> </div></div>80n<br>