If you suggest, I can share my scenario files with you. Meanwhile, kindly tell me if this is correct: "If we aggregate all the edges in the edgeData file, then the average speed should be the same as that obtained through SUMO." Thanks,
On Thu, Dec 22, 2022 at 2:31 PM Jakob Erdmann <[email protected]> wrote: > It's hard to tell without seeing the traffic patterns but there could be > complex interactions due to intersections and whatever the rerouters are > doing. Observing the scenario while it runs is usually the best way to > figure these things out. It also helps to set vehicle coloring to "by > speed". > > Am Do., 22. Dez. 2022 um 09:51 Uhr schrieb 191 000 < > [email protected]>: > >> I have attached a screenshot for your reference. >> >> On Thu, Dec 22, 2022 at 2:12 PM 191 000 <[email protected]> wrote: >> >>> I have rechecked all my edges, and all the units are in m/s. The >>> simulation scenario is for 39600-time steps, where initially vehicles enter >>> from one edge and get out at another, travelling with maximum allowable >>> speed but only using some of the edges of the network. After about 3600 >>> timesteps, a few more vehicles enter, but now they use all the edges and >>> may slow down or stop based on traffic conditions. In this scenario, the >>> average speed for initial 3600 timesteps, the average speed is around >>> 3-4m/s, while after 3600, it goes up to 7-8m/s, which I find >>> counterintuitive. Hence I tried matching it with edgeData file values. >>> >>> On Thu, Dec 22, 2022 at 2:04 PM Jakob Erdmann <[email protected]> >>> wrote: >>> >>>> This sounds like a km/h vs m/s mismatch. If you define your edges with >>>> 16km/h than the average speed would typically be a bit lower i.e. ~14 km/h >>>> (due to random slow-downs and interactions of vehicles with different >>>> desired speeds). This would then be presented to you by sumo as ~3.8 m/s . >>>> >>>> Am Do., 22. Dez. 2022 um 06:45 Uhr schrieb 191 000 < >>>> [email protected]>: >>>> >>>>> Dear community, >>>>> Regarding the previous discussion on average speeds in SUMO, I have >>>>> encountered another setback. Earlier I was using SUMO-GUI to generate a >>>>> graph of the average speed of the whole network (at 5-minute intervals) >>>>> and >>>>> save it as a CSV file. Then I thought that if I got aggregated average >>>>> speed of all the edges in the network, it should be equal to the values >>>>> obtained from SUMO-GUI, but this is not the case. Could you explain how >>>>> the >>>>> average speed for the whole network is calculated and how I can get the >>>>> same values through the edgeData file? >>>>> I wanted to compare these values as even though I had a max allowable >>>>> speed of 16 and the vehicles were free-flowing, the average speed in >>>>> SUMO-GUI would be around 3-4. >>>>> Thanks and regards, >>>>> Rohan >>>>> >>>>> On Tue, Dec 13, 2022 at 2:11 PM Jakob Erdmann <[email protected]> >>>>> wrote: >>>>> >>>>>> The speed value is computed as travelledDistance / sampledSeconds. >>>>>> You should be able to replicate the aggregated speed value by the >>>>>> following procedure: >>>>>> - for each edge compute travelled distances as speed * sampledSeconds >>>>>> - sum up the distances and sampledSeconds >>>>>> - take the quotient of the sums >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Am Di., 13. Dez. 2022 um 09:23 Uhr schrieb 191 000 < >>>>>> [email protected]>: >>>>>> >>>>>>> Dear community, >>>>>>> >>>>>>> I have been trying to understand how the average speed is >>>>>>> calculated in edge-based traffic measures. I know it is space-mean speed >>>>>>> but I am trying to aggregate data for multiple edges. >>>>>>> I first generated average speed of two edges using edges="" and >>>>>>> aggregate="True" method, then I generated average speed of the two edges >>>>>>> separately. Now, I have tried arithmetic mean, harmonic mean, weighted >>>>>>> average by numbers but cannot get the value equal to the aggregated >>>>>>> value >>>>>>> given by SUMO. >>>>>>> Kindly suggest in what way can I manually aggregate the average >>>>>>> speed data so as to get same value as when being done by aggregating >>>>>>> directly through SUMO. >>>>>>> >>>>>>> Thanks and regards, >>>>>>> Rohan >>>>>>> _______________________________________________ >>>>>>> sumo-user mailing list >>>>>>> [email protected] >>>>>>> To unsubscribe from this list, visit >>>>>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>>>>> >>>>>> _______________________________________________ >>>>>> sumo-user mailing list >>>>>> [email protected] >>>>>> To unsubscribe from this list, visit >>>>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>>>> >>>>> _______________________________________________ >>>>> sumo-user mailing list >>>>> [email protected] >>>>> To unsubscribe from this list, visit >>>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>>> >>>> _______________________________________________ >>>> sumo-user mailing list >>>> [email protected] >>>> To unsubscribe from this list, visit >>>> https://www.eclipse.org/mailman/listinfo/sumo-user >>>> >>> _______________________________________________ >> sumo-user mailing list >> [email protected] >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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