[GraphHopper] Driving Time Graphhopper vs OSRM

[Peter K]

HI Laura,

thanks! I'll investigate. Try 'git checkout <somewhereBefore>' for now ;)

Regards,
Peter.

> Hi,
>
> when I try to import the latest germany file, I now get the following
> error:
>
> 2013-07-04 15:05:44,267 [main] INFO  graphhopper.reader.OSMReader - 138?326?809, now parsing ways
> 04.07.2013 15:05:46 com.google.inject.internal.MessageProcessor visit
> INFO: An exception was caught and reported. Message: java.lang.IllegalArgumentException: Speed value too large for encoding: 1890
> java.lang.IllegalStateException: Couldn't load graph
> 	at com.graphhopper.http.DefaultModule.configure(DefaultModule.java:62)
> 	at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
> 	at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
> 	at com.google.inject.spi.Elements.getElements(Elements.java:101)
> 	at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:133)
>
> Might this relate to the speed limit change performed yesterday?
>
>
> Thanks, Laura
>
>
> 2013/7/3 Peter K <peathal at yahoo.de <mailto:peathal at yahoo.de>>
>
>     Hi Guillaume,
>
>     did you pull, recreate graphhopper and import the graph again? For
>     the example graphhopper now returns 1h 6min
>
>     Regards,
>     Peter.
>
>>     Hi Peter,
>>
>>     Thanks a lot for your assistance. Unfortunately, it does not
>>     change the driving duration ...
>>
>>     BR
>>
>>     Guillaume
>>
>>     Le 3 juil. 2013 à 16:34, Peter K <peathal at yahoo.de
>>     <mailto:peathal at yahoo.de>> a écrit :
>>
>>>     fixed a bug where speed limits can now be bigger than the speed
>>>     estimated by the highway tag.
>>>     Please report if this fixes your problems!
>>>
>>>     Regards,
>>>     Peter.
>>>
>>>>     Hi Peter,
>>>>
>>>>     Here is an example where time difference is around +40% . The
>>>>     good duration is 1h05 min
>>>>
>>>>     http://graphhopper.com/maps/?point=47.87502,-3.92245&point=48.44791,-4.41854&vehicle=car
>>>>
>>>>     Graphhopper : 1h23 min
>>>>
>>>>
>>>>     http://map.project-osrm.org/?hl=fr&loc=47.87502,-3.92245&loc=48.44791,-4.41854
>>>>     OSRM : 01h04 min
>>>>
>>>>
>>>>     Thanks for your help 
>>>>
>>>>     Guillaume
>>>>
>>>>
>>>>
>>>>     Le 2 juil. 2013 à 14:37, Peter K <peathal at yahoo.de
>>>>     <mailto:peathal at yahoo.de>> a écrit :
>>>>
>>>>>     Hi Guillaume,
>>>>>
>>>>>     I do not know internals from OSRM but GraphHopper could
>>>>>     probably need
>>>>>     some tuning there (e.g. less speed in cities, less speed for
>>>>>     turns, ...).
>>>>>
>>>>>     Do you have some example links for OSRM where you encounter
>>>>>     big differences?
>>>>>
>>>>>     Regards,
>>>>>     Peter.
>>>>>
>>>>>>     Hello,
>>>>>>
>>>>>>     We are testing Graphhopper and OSRM and we have found some
>>>>>>     differences in routing times :
>>>>>>
>>>>>>     - Graphhopper returns longer driving time as OSRM does
>>>>>>     (except for very short distance between 2 cities). It appears
>>>>>>     that OSRM driving durations are closer to the real durations
>>>>>>     compare to Graphhopper.
>>>>>>     - We have set  same speed parameters (when there is no max
>>>>>>     speed) on Graphhopper (carflagencoder.java) and OSRM (car
>>>>>>     profile).
>>>>>>
>>>>>>     Both Graphhopper and OSRM seems to be using CH.
>>>>>>
>>>>>>     How to explain these difference in driving time ? Is there a
>>>>>>     way to modify parameters on Graphhopper to get driving
>>>>>>     durations closer to the real ones ?
>>>>>>
>>>>>>     Thank you
>>>>>>
>>>>>>     Guillaume
>

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