Re: [sumo-user] Calculating shortest driving route between 2 nodes in SUMO/TraCI/SumoLib

[Jakob E. <nam...@go...>]

Hello,
there is currently no straight-forward way to achieve this.
a) If the given vehicle should make a detour via Z you can use a
combination of
 vehicle.changeTarget, vehicle.setStop and vehicle.rerouteTraveltime
use setStop to define edges that must be in the vehicles route (i.e. Z or
parts of the original route that shall be kept)
use changeTarget if the vehicle should travel only to Z and end there
use rerouteTraveltime to compute a new route including the defined
intermediate edges
call setStop with duration 0 to remove the stops again

b) if you just need the edges between the closest node and Z (i.e. B to Z)
you have to
- define a route with a single edge before B
- add a vehicle with that route
- call changeTarget to Z for the new vehicle
- retrieve the vehicles route edges
- remove the vehicle
- remove the single-edge route

regards,
Jakob



2016-05-11 11:00 GMT+02:00 Arslane Hamza Cherif <hc....@gm...>:

> Hello,
>
> I will try to explain it in a more clear way, I have a vehicule going for
> example from points/nodes A to F passing by B,C,D & E.
>
> What i want to achieve is to determine:
>
>    1. Which node from B,C,D & E is the closest (Driving distance not Air
>    distance) to a target node Z ?
>    2. For this closest node, what is the route corresponding to the
>    minimal driving distance computed between it and Z ?
>
> For the first question, the best solution is to retrieve nodes that
> compose the current route of a vehicule than calculate the driving distance
> between each node and the target node.
>
> For the second question, *i don't now how to achieve it. this is what i
> am looking for.*
>
> Thank you for your time,
>
> Best regards,
> Arslane
>
>
> *Arslane*, un mec sympa et drole qui vous veut du bien !
>
> Citation favorite : " Qui aime bien chatîe bien"
>
>
> 2016-05-11 10:46 GMT+02:00 Jakob Erdmann <nam...@go...>:
>
>> Your question remains unclear to me. Are you asking for
>>  1) a completely new route that approaches this point or
>>  2) for an earlier end of the given route close to that point?
>>
>> 2016-05-11 10:20 GMT+02:00 Arslane Hamza Cherif <hc....@gm...>:
>>
>>> Hello,
>>>
>>> I asked before about "How to calculate the closest point between a
>>> vehicule
>>> route and a fixed point in SUMO & TraCI"
>>> <https://sourceforge.net/p/sumo/mailman/message/34977131/>, the best bet
>>> seems to be to first define nodes who compose the current route, than in
>>> a
>>> second step calculate the distance between each route node and the target
>>> node with the use of TraCI Command *Distance Request *
>>>
>>> Now, What i am looking for is to retrieve the best route that correspond
>>> to
>>> the computed
>>> *Distance Request, how can i do it ?*
>>> Many thanks,
>>>
>>> Best regards,
>>> Arslan
>>>
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>>
>>
>