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 <rohanverma...@gmail.com >: > 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 <namdre.s...@gmail.com> > 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 < >> rohanverma...@gmail.com>: >> >>> 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 >>> sumo-user@eclipse.org >>> To unsubscribe from this list, visit >>> 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 >> > _______________________________________________ > 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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