the documentation provides ample info here: https://sumo.dlr.de/docs/TraCI/Vehicle_Value_Retrieval.html
I guess you could first determine what vehicles are in a given area or location, and then retrieve data for those vehicles. Greets, Menno On 14-5-2021 11:20, ali mirzaei wrote: > I get the point you said. But, my other question remains. What is the > option to receive vehicle data at a specific point? > Regards, > Ali > > On Fri, May 14, 2021 at 12:37 PM Menno van der Woude > <me...@codingconnected.eu <mailto:me...@codingconnected.eu>> wrote: > > That function should return the described value. However, if no > vehicles were on the detector during the last step, no valid data > can be returned, so you get -1 and (). If a vehicle was on the > detector during the last step, the method will give you the data. > > Greets, Menno > > On 14-5-2021 10:04, ali mirzaei wrote: >> Hi Menno, >> This is what the mannaul says: >> *getLastStepMeanSpeed(self, detID)* >> *getLastStepMeanSpeed(string) -> double >> >> Returns the current mean speed in m/s of vehicles that were on >> the named e2*. >> >> I am looking for a tool by which I can extract the flow >> characteristics at the time the vehicle is on the detector. So, >> is there any option to get more data of vehicles in >> traci.lanearea module? >> >> Sincerely, >> ALI >> >> >> On Fri, May 14, 2021 at 11:33 AM Menno van der Woude >> <me...@codingconnected.eu <mailto:me...@codingconnected.eu>> wrote: >> >> Hello Ali, >> >> the e1 detector has no length, I think you should use an e2 >> detector if >> you want to have a detector that covers an area. >> >> Regarding the functions: when do you call these? I'd expect >> -1 and () >> when no vehicles were on the detector during the last step. >> So at the >> start of the simulation, you will most likely get those >> results. And >> afterwards if there has been no traffic. >> >> Greets, Menno >> >> On 13-5-2021 23:28, ali mirzaei wrote: >> > Hi everyone, >> > 1- What is the length of the induction loop(e1detector)? >> > 2- in the case of e2detector, when I generate my add.XML >> file consisting of: >> > <e2Detector id="e2Detector_1" lane="e2_0" pos="15.22" >> > length="10.00" freq="5" file="e2_det.xml" >> friendlyPos="1"/> >> > and call the functions: >> > print(traci.lanearea.getLastStepMeanSpeed("e2Detector_1")) >> > print(traci.lanearea.getLastStepVehicleIDs("e2Detector_1")) >> > the answer is "-1" and "()". >> > Why does this happen? >> > Any help would be appreciated. >> > >> > Regards, >> > Ali >> > _______________________________________________ >> > sumo-user mailing list >> > sumo-user@eclipse.org <mailto:sumo-user@eclipse.org> >> > To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> <https://www.eclipse.org/mailman/listinfo/sumo-user> >> _______________________________________________ >> sumo-user mailing list >> sumo-user@eclipse.org <mailto:sumo-user@eclipse.org> >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> <https://www.eclipse.org/mailman/listinfo/sumo-user> >> >> >> _______________________________________________ >> sumo-user mailing list >> sumo-user@eclipse.org <mailto:sumo-user@eclipse.org> >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> <https://www.eclipse.org/mailman/listinfo/sumo-user> > _______________________________________________ > sumo-user mailing list > sumo-user@eclipse.org <mailto:sumo-user@eclipse.org> > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user> > > > _______________________________________________ > sumo-user mailing list > sumo-user@eclipse.org > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user
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