[Talk-us] Complex intersection mapping

John F. Eldredge john at jfeldredge.com
Tue Oct 15 02:47:06 UTC 2013


Richard Welty <rwelty at averillpark.net> wrote:
> On 10/14/13 1:52 PM, Ian Dees wrote:
> >
> >
> >
> > On Mon, Oct 14, 2013 at 12:42 PM, Martijn van Exel
> > <martijnv at telenav.com <mailto:martijnv at telenav.com>> wrote:
> >
> >     Hi all,
> >
> >     Here at Telenav we have been looking at complex intersections
> and we
> >     have set about editing some of these intersections in a way we
> feel
> >     represents the situation on the ground better than their
> original
> >     state, and because of that, works better for us. We have
> received some
> >     feedback on our edits so we wanted to take a step back and see
> what we
> >     (as the OSM community) think is the preferred way to map these
> >     intersections.
> >
> >     So what are we talking about? Intersections like this one, where
> one
> >     or more dual carriageways come together at an at-grade
> intersection:
> >
> >    
> https://www.evernote.com/shard/s9/sh/6438c196-bb92-4f66-81dc-9b75186286ba/0e8f07ff527c6a85c0dec426b9b79f1e
> >
> >     One of my colleagues at Telenav has remapped this intersection
> as
> >     follows:
> >
> >    
> https://www.evernote.com/shard/s9/sh/3491f1fe-6afa-4571-bc43-7cb31c9c2625/9dd47d1445fdcf03d3f0bbd93b8e0f92
> >
> >
> > I've seen more examples of your "after" photo than the "before" in
> my
> > mapping. I create them by default when dual carriageways intersect.
> >
> > +1 you're doing the right thing.
> >
> i consider the "after" a better approach as well.
> 
> richard
> 
> 
> 
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I agree that the second version is much better.

-- 
John F. Eldredge -- john at jfeldredge.com
"Darkness cannot drive out darkness: 
only light can do that.
Hate cannot drive out hate: only love can do that."
Dr. Martin Luther King, Jr.
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