Re: [sumo-user] Multistage Routing of Persons

[Jakob Erdmann via sumo-user <sumo-user@xxxxxxxxxxxxxxxxxxxxx>]

Hello,
there was indeed a bug: attribute arrivalPos was ignored for <ride>
elements.
This has been fixed in revision [25782].
Thanks for reporting!

Regarding edge length, the amount subtracted due to junction size depends
on many factors (most important the number of incoming lanes at the
junction). Getting lengths from node positions would also fail for curved
geometries. Also, the network format permits setting an arbitrary length
that differs from the geometrical length.
You can retrieve the length of an edge via sumolib (
http://sumo.dlr.de/wiki/Tools/Sumolib).

regards,
Jakob

2017-08-31 14:30 GMT+02:00 Albiston, Gregory 2012 (PGR) <
gregory.albiston2012@xxxxxxxxxxxx>:

> Hello Jakob,
>
>
> Thanks for the previous prompt response.
>
>
> The difference in lengths is that I've calculated the node to node
> distance from the plain XML coordinates.
>
> The edge length reported is seemingly that distance shortened by the
> junctions at each end.
>
> Is there a guide line distance that will be lost on the edge length due to
> junctions?
>
>
> I've been continuing to look at the person "arrivalPos" and it does not
> seem to change their position on the edge.
>
> In the attached simpler example (again had to remove the xml file endings) the
> vehicle picks up the person and delivers them to the first target edge.
>
> The vehicle parks half way along the edge, as intended, but the person is
> positioned at the edge end.
>
> This means that they are out of range to undertake the next stage which
> produces a warning.
>
>
> How can the person be instructed to exit the vehicle at the stop position?
>
>
> Thanks,
>
>
> Greg
>
>
> ------------------------------
> *From:* Jakob Erdmann <namdre.sumo@xxxxxxxxxxxxxx>
> *Sent:* 16 August 2017 15:57:38
> *To:* Albiston, Gregory 2012 (PGR)
> *Cc:* Chang-Wu Chen
> *Subject:* Re: [sumo-user] Multistage Routing of Persons
>
> Hello,
> personA is riding in vehicle PersonA_car0 in it's previous stage. This
> vehicle stops once to pick up the person but it does not stop a second time
> to allow disembarking. Figuratively speaking, personA jumps out of the
> vehicle once that vehicle leaves the network (which happens to be the end
> of edge LeisurePlaceRoadLink2). Since that is the intended arrival edge no
> warning is printed (which probably is not very helpful and should be
> changed). When looking at the network, 207.87 is exactly the length of that
> edge.
>
> regards,
> Jakob
>
> 2017-08-16 14:41 GMT+02:00 Albiston, Gregory 2012 (PGR) via sumo-user <
> sumo-user@xxxxxxxxxxxxxxxxxxxxx>:
>
>> Hello,
>>
>> I'm trying to create multistage routing plans in SUMO 0.30 for Persons
>> using the information at: http://sumo.dlr.de/wiki/Specif
>> ication/Persons#Stops
>>
>> Attached is a working example scenario which reproduces the problem I've
>> encountered (file extensions changed from XML due to a mail client
>> attachment restriction).
>> The example scenario results in four out of five people completing their
>> plan.
>> The one plan which fails gives the following message:
>>
>> "Warning: PersonA at edge 'LeisurePlaceRoadLink2' position 207.87 cannot
>> use waiting vehicle 'PersonA_car1' at position 0.00 because it is too far
>> away."
>>
>> I've attempted to specify the "arrivalPos" of the person on the previous
>> stages but it seems to have no effect on setting the Person's edge position.
>> Also tried changing the stop "startPos" and "endPos" to similar values
>> but this didn't solve it.
>>
>> It not clear to me why the PersonA has a position of 207.87 on that edge
>> (none of the other Persons seem to have a problem).
>> Explicitly setting the vehicle "departPosition" to that value is
>> successful but the only way I can see to generate this value is trial and
>> error which isn't going to work in my later scenarios.
>> Trying to set the vehicle "departPosition" to "last" (as per
>> http://sumo.dlr.de/wiki/Definition_of_Vehicles,_Vehicle_
>> Types,_and_Routes#departPos) also didn't work as the edge length is 224,
>> which again raises the question of why 207.87?
>>
>> Apologies if I've missed something obvious.
>>
>> Thanks for any help in advance,
>>
>> Greg
>>
>>
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