On 08/29/2013 09:57 AM, Colin Smale wrote:
Won't the calculated radius depend on the number of points on the way,
and the width of the road? If you look closely at the geometry of a
curved road in OSM it is of course made up of straight segments with a
certain angle between them. A right angle junction might be a 45 steps
of 2 degrees each, giving a smooth curve with a certain radius, but it
can also be represented by a single node with an angle of 90 degrees.
How do you work out the turning radius from that?
On 2013-08-29 16:48, John F. Eldredge wrote:
On 08/29/2013 09:33 AM, Pieren wrote:
On Thu, Aug 29, 2013 at 4:07 PM, André Pirard
<[email protected] <mailto:[email protected]>> wrote:
I was very surprised to come across that tag
<http://wiki.openstreetmap.org/wiki/Key:turning_radius>
I will remove it from the "map features" page. Radius can be
calculated from the way geometry. It has been used 7 times by one
user so far... Next comments on this should be forwarded to the
tagging list.
Pieren
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I suppose the logic is to say "what is the largest turning radius
that can turn around at this point", but it does make more sense to
calculate it from the way geometry instead.
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I see your point. Yes, there might be some usefulness to this tag after
all. This is one that probably would not be displayed on map tiles, but
might be of use to specialized routing software.
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