Re: [sumo-user] Adding vehicles dynamically with traci

[Anderson R. <and...@gm...>]

Hi Craig,

AFAIK, if we try to retrieve information of a vehicle that does not exist
in the simulation, SUMO gives a corresponding error message and finishes
gracefully. A segfault occurs when something really wrong happens on
SUMO...

Could you provide more information on what steps do you execute that
triggers the error?

Regards,
--
Anderson Rocha Tavares
http://inf.ufrgs.br/~artavares/


2013/3/14 Hotmail <cra...@ho...>

> Anderson,
>
>                   Thank you do much! That worked! :D I've been messing
> with such a simple thing for two weeks. I didn't realize the inputs were
> optional. Next up, I am trying to call traci.changeTarget(vehID,edgeID). I
> use a method that provides a random edge to get the edgeID. I get a
> segfault in sumo when I try this. It could be because the car completed its
> route and no longer exists or I'm calling it wrong. What do you think?
>
> Thanks for all the help :).
>
> -Craig
>
> On Mar 14, 2013, at 8:38 PM, Anderson Rocha <
> and...@gm...> wrote:
>
> > Hi Craig,
> >
> > Try omitting the depart time, position, speed and lane as well, making
> your
> > traci call look like this:
> >
> > traci.vehicle.add(str(vehID), str(routeID))
> >
> > Also, please "answer to all" in the emails so that the other members in
> > sumo-user list receive the emails :)
> >
> > Regards,
> > --
> > Anderson Rocha Tavares
> > http://inf.ufrgs.br/~artavares/
> >
> >
> > 2013/3/14 Craig Herndon <cra...@ho...>
> >
> >> Anderson,
> >>
> >>                   I just made your suggested change and sumo no longer
> >> sends an error.
> >> However, the vehicles still don't see the roadway. I even changed the
> >> depart time to -2.
> >> I have subscribed to vehicles and I use pprint to print out the
> >> subscription results.
> >> 80 is the traci constant for road id. 86 is the traci constant for lane
> >> position. I don't understand
> >> why the cars are never added to the roadway.
> >>
> >> {'1': {80: '', 86: -1001.0},
> >> '10': {80: '', 86: -1001.0},
> >> '2': {80: '', 86: -1001.0},
> >> '3': {80: '', 86: -1001.0},
> >> '4': {80: '', 86: -1001.0},
> >> '5': {80: '', 86: -1001.0},
> >> '6': {80: '', 86: -1001.0},
> >> '7': {80: '', 86: -1001.0},
> >> '8': {80: '', 86: -1001.0},
> >> '9': {80: '', 86: -1001.0}}
> >
>