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 >> >
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