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
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