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Re: [sumo-user] TraCI findRoute errors 
Good morning Jakob,

this is the stack trace:

Warning: No connection between edge '-207' and edge '-208' found.
Error: Vehicle '' is not allowed to depart on any lane of its first edge.
Quitting (on error).
Traceback (most recent call last):
  File "mobilitygen.trips.py", line 431, in <module>
    _main()
  File "mobilitygen.trips.py", line 419, in _main
    trips = _compute_trips_per_type(conf, taz_weights, net, parkings)
  File "mobilitygen.trips.py", line 322, in _compute_trips_per_type
    config['taz'][area['to']], graph, net)
  File "mobilitygen.trips.py", line 249, in _find_allowed_pair
    ret = traci.simulation.findRoute(from_edge, to_edge, vtype=vType)
  File "/home/drone/Applications/SUMO/sumo-git/sumo/tools/traci/_simulation.py", line 357, in
findRoute return _readStage(self._connection._checkResult(tc.CMD_GET_SIM_VARIABLE, tc.FIND_ROUTE,
"")) File "/home/drone/Applications/SUMO/sumo-git/sumo/tools/traci/connection.py", line 155, in
_checkResult result = self._sendExact()
  File "/home/drone/Applications/SUMO/sumo-git/sumo/tools/traci/connection.py", line 98, in
_sendExact raise FatalTraCIError("connection closed by SUMO")
traci.exceptions.FatalTraCIError: connection closed by SUMO

The only thing I do in the script with TraCI is opening the connection, calling thousands of
findRoute and then closing it at the end.

If you want I can send you everything, but it's not going to be a small example, I tried, and just
to give you something to run is going to be dozens of files. 

Thanks Jakob :)

Regards,
Lara

On Mon, 28 May 2018 19:27:00 +0200
Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

> Hello,
> neither of the errors you mentioned should stop sumo from working when
> triggered via TraCI. They are expected to raise a TraCIException which you
> can catch in your script.
> Only a FatalTraCIError signals an unrecoverable error. It could help if you
> provide a stack trace of the error from your script.
> regards,
> Jakob
> 
> 2018-05-28 16:55 GMT+02:00 Lara CODECA <lara.codeca@xxxxxxxxxx>:
> 
> > Dear All,
> >
> > I'm trying to use "findRoute" from a python script using TraCI.
> >
> > I need to see if there is a route between two edges for a specific vType.
> >
> > I'm loading a simulation using traci.start(['sumo', '-c', 'sim.sumocfg'])
> > and then, I call
> > traci.simulation.findRoute(from_edge, to_edge, vtype=vType) in order to
> > find it.
> >
> > I solved the "Error"
> > Warning: No connection between edge '218' and edge '-372' found.
> > by adding <ignore-route-errors value="true"/> to the configuration file.
> >
> > Unfortunately I'm not able to handle the following one:
> > Error: Vehicle '' is not allowed to depart on any lane of its first edge.
> >
> > I tried with a try-except, but given that the error is on the SUMO side,
> > this approach is useless.
> >
> > I need to know if the route is possible, and in case is not, change edges.
> > I'm using this to
> > implement a mobility generator. Can I do it with findRoute and
> > findIntermodalRoute or is not
> > possible?
> >
> > I'm using:
> > - Debian Unstable/Experimental
> > - Eclipse SUMO Version b2f76e2749
> >         Build features: Linux-4.16.0-1-amd64 Proj GUI GDAL FFmpeg OSG
> > GL2PS SWIG
> >
> > Thanks in advance.
> >
> > Regards,
> > Lara
> >
> > --
> > Lara CODECA
> > Postdoc
> > Tel : 04.93.00.81.51
> >
> > EURECOM
> > Campus SophiaTech
> > http://www.eurecom.fr/
> > _______________________________________________
> > sumo-user mailing list
> > sumo-user@xxxxxxxxxxx
> > To change your delivery options, retrieve your password, or unsubscribe
> > from this list, visit
> > https://dev.eclipse.org/mailman/listinfo/sumo-user
> >  



-- 
Lara CODECA
Postdoc
Tel : 04.93.00.81.51

EURECOM
Campus SophiaTech
http://www.eurecom.fr/

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