[GraphHopper] Something wrong with bike routing?

Peter K peathal at yahoo.de
Wed May 7 09:58:19 UTC 2014


Thanks! I've added your example to the issue.

If you or others have other tracks where I can check the bike routing
then feel free to post them here with a GraphHopper Maps Link and
optionally a GPX file (or via GPS Visualizer) for the expected route.

Regards,
Peter.


> Thanks for the quick responses. The old route did use more cycleways
> so that seems to be the problem indeed. I'll keep an eye on the gitbug
> issue.
>
> I've noticed that the GPS Visualizer link only works for a few days.
> Here is the same route comparison for reference:
> https://www.dropbox.com/s/6ri4mjm5k4vv468/GraphHopper.html
>
> Keep up the good work!
>
> Peter
>
>
> On Thu, May 1, 2014 at 1:42 PM, Peter K <peathal at yahoo.de
> <mailto:peathal at yahoo.de>> wrote:
>
>     Hey ratrun,
>
>     really no problem. As you already noted this was also more or less
>     a limitation of graphhopper - will be improved in the issue you
>     mentioned.
>
>     Regards,
>     Peter.
>
>
>>     Hello Peter,
>>
>>     During the introduction of support for bicycle relations the
>>     weighting of highways of type cycleway, which are not part of a
>>     bicycle relation, unintentionally decreased in comparison to the
>>     previous versions. I guess that this is the difference you are
>>     seeing, because in the Benelux there are lots of cycleways.
>>     Peter intends to introduce a "preference routing" feature shortly
>>     - see https://github.com/graphhopper/graphhopper/issues/190, and
>>     I hope that this feature will allow easier tuning between the
>>     "fastest" and the "safest, nice" route.
>>
>>     regards,
>>
>>     ratrun
>>
>>     Am 30.04.2014 22:33, schrieb Peter Bryan:
>>>     Hi all,
>>>
>>>     The last few days (weeks?) I've noticed that graphhopper routes
>>>     for bicycles seem to have changed. Previously, graphhopper would
>>>     take more bike friendly roads like bicycle paths or quiet roads.
>>>     Routes created today seem to take bigger and busier roads, most
>>>     suitable for cars. Is there something wrong with bicycle
>>>     routing? Of course, I prefer cycle paths over busy roads.
>>>
>>>     I've uploaded an example on GPS Visualizer with an old and a new
>>>     route between the same locations:
>>>     http://www.gpsvisualizer.com/display/20140430130842-45066-map.html
>>>
>>>     The old track (created in March) is much better than the route I
>>>     created today. I've tried this on GPSies and
>>>     graphhopper.com/maps <http://graphhopper.com/maps> with the same
>>>     results. Routing between other locations have the same problem.
>>>
>>>     Thanks for looking into this!
>>>
>>>     Peter
>

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