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<div class="moz-cite-prefix">Hey Lukas,<br>
<br>
first of all, I think one should not map towards a routing engine
or renderer although I sometimes wish it was ;). Instead I would
try to make it how it is in reality.<br>
<br>
Of course from a programmers perspective point 2 would be the
simplest. But point 3 would be probably closer to reality and also
easy to implement.<br>
<br>
I'm not sure I understand point 4: will the area be connected to
the ways or just 'overlap' the area where the way form the
junction? Then this would be as complex as point 1 to implement as
one would have to query some spatial helper datastructure, but
maybe point 1 is the hardest (just guessing). <br>
<br>
1 and 4 are of course not impossible, but more complex than 2 or
3.<br>
<br>
Regards,<br>
Peter.<br>
<br>
On 27.07.2014 13:23, Lukas Sommer wrote:<br>
</div>
<blockquote
cite="mid:CAFTrL-1gBO4zsYz=JstTk=99ct9b5r62-S4cOdNVbTNZU=URug@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Hello.<br>
<br>
</div>
There are currently some efforts to get junction names and
traffic signal names rendered in openstreetmap-carto. The
tagging for complex junctions isn’t yet well defined. So I would
like to hear your opinion and your advice about which of our
ideas would be suitable/best for routing/turn-to-turn
navigation.<br>
<br>
Background:In some countries (Japan, Korea, Ivory Coast…) people
orient themselves in the local area using the names of road
junctions (like crossroads or roundabouts) or traffic signals
rather then the names of streets. While street names also exist,
they are not important for orientation. (Note: This is about
orientation in the local area, thus different from the names of
motorway junctions who’s names serve for orientation at large
distances.)<br>
<div>
<div><br>
Example: <a moz-do-not-send="true"
href="http://wiki.openstreetmap.org/wiki/File:Junction_yes_example_2.png"
target="_blank">http://wiki.openstreetmap.org/wiki/File:Junction_yes_example_2.png</a>
<br>
<br>
Possibility 1: A simple node in the middle of the junction.
This node contains the name of the junction. The node is not
connected with any of the ways.<br>
<br>
Possibility 2: All shared nodes (of the crossing ways)
contain the name of the junction.<br>
<br>
</div>
<div>Possibility 3: A relation contains the name of the
junction and has all shared nodes (of the crossing ways) as
members.<br>
<br>
</div>
<div>Possiblity 4: An area contains the name of the junction.
The area covers the outline of the physical area of the
junction on the ground. The area shares individual nodes
with all incoming and outgoing ways. (In the example: 8
shared nodes)<br>
<br>
</div>
<div>From the point of view of a developer of
routing/turn-to-turn navigation: Which of theses solutions
would be perfect, which would be still acceptable, and which
would be a no-go?<br>
<br>
<div>Lukas Sommer</div>
</div>
</div>
</div>
<br>
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