Dear Manikanta,
the "number" attribute refers to an absolute number of vehicles. If you
want to vary the flow duration but keep the flow rate constant (and the
vehicles' distances at insertion all the same), you are better off using
the "vehsPerHour" attribute. There you enter the number of vehicles you
would expect for an hour of this flow. Changing the flow duration will
scale the number of vehicles proportionally.
The instable part of the fundamental diagram (high density) is difficult to
reproduce. Even this example
<https://sumo.dlr.de/docs/Tools/Visualization.html#fundamental_diagram_from_edgedata>
in our documentation shows very few data points at high densities.
Best regards
Mirko
-----Original-Nachricht-----
Betreff: [sumo-user] Flow-Density MFD Plots
Datum: 2023-12-13T07:18:50+0100
Von: "Desu Venkata Manikanta via sumo-user" <sumo-u...@eclipse.org>
An: "Desu Venkata Manikanta via sumo-dev" <sumo-dev@eclipse.org>
TCS Confidential
Hi Team,
I am confused of two concepts in SUMO.
1. How the insertion of vehicles will happen, if i use same "number" in
flow command.
2. For the same number of vehicles, will the simulation end time effect
the insertion rate.
Basically, I want to plot the MFD by setting the max number of vehicles
with number attribute in flow. I am using the density value from the
edgeStats output file. However, I am not able to get the bottom U-shaped
curve for flow-density graph. I have referred the circular loop in docs,
but no improvement.
Please guide me how to get this graph.
Regards
Manikanta
TCS Confidential
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