Hello Manikanta, I'm interested to see if you can finally create good MFDs in SUMO for your network and if so, how. I have the same issue but I always thought that the reason for not having the bottom part is having some links that are not congested or loaded during the simulation so the MFD for the region won't have the bottom part.
Hope to hear from you soon, Thanks, Soheil On Wed, Dec 13, 2023 at 9:05 PM Desu Venkata Manikanta via sumo-user < sumo-user@eclipse.org> wrote: > TCS Confidential > > Dear Mirko, > > Thank you for your explanation. > > I am able to achieve maximum density in my current simulations, but i > could see flow is constantly increasing with the density, which is not the > case as per MFD. I.e bottom U shaped curve is not coming. Speed is also > constantly decreasing. > > Can you help in this. > > Regards > Manikanta > > TCS Confidential > ------------------------------ > *From:* sumo-user <sumo-user-boun...@eclipse.org> on behalf of Mirko > Barthauer via sumo-user <sumo-user@eclipse.org> > *Sent:* Wednesday, December 13, 2023 3:02 PM > *To:* Sumo project User discussions <sumo-user@eclipse.org>; Desu Venkata > Manikanta via sumo-dev <sumo-...@eclipse.org> > *Cc:* Mirko Barthauer <m.bartha...@t-online.de> > *Subject:* Re: [sumo-user] Flow-Density MFD Plots > > *External Email : Be cautious while opening any links or attachments.* > > 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://urldefense.com/v3/__https://sumo.dlr.de/docs/Tools/Visualization.html*fundamental_diagram_from_edgedata__;Iw!!K-Hz7m0Vt54!hkkihl-UNnZOiGlep0mH2AdI7CjpfS667glnQf1ULLB-yo-slC2uNjgP-wYAGEvHljGe_1jddM4uwEEKAURr$> > in our documentation shows very few data points at high densities. > > > > Best regards > > Mirko > > > > > > > > > > -----Original-Nachricht----- > > Betreff: [sumo-user] Flow-Density MFD Plots > > Datum: 2023-12-13T07:18:50+0100 > > Von: "Desu Venkata Manikanta via sumo-user" <sumo-user@eclipse.org> > > An: "Desu Venkata Manikanta via sumo-dev" <sumo-...@eclipse.org> > > > > > > > > TCS Confidential > > Hi Team, > > I am confused of two concepts in SUMO. > > 1. How the insertion of vehicles will happen, if i use same "number" > in flow command. > 2. For the same number of vehicles, will the simulation end time > effect the insertion rate. > > Basically, I want to plot the MFD by setting the max number of vehicles > with number attribute in flow. I am using the density value from the > edgeStats output file. However, I am not able to get the bottom U-shaped > curve for flow-density graph. I have referred the circular loop in docs, > but no improvement. > > Please guide me how to get this graph. > > Regards > Manikanta > > TCS Confidential > > =====-----=====-----===== > Notice: The information contained in this e-mail > message and/or attachments to it may contain > confidential or privileged information. If you are > not the intended recipient, any dissemination, use, > review, distribution, printing or copying of the > information contained in this e-mail message > and/or attachments to it are strictly prohibited. If > you have received this communication in error, > please notify us by reply e-mail or telephone and > immediately and permanently delete the message > and any attachments. Thank you > > > > > > _______________________________________________ > sumo-user mailing list > sumo-user@eclipse.org > To unsubscribe from this list, visit > https://urldefense.com/v3/__https://www.eclipse.org/mailman/listinfo/sumo-user__;!!K-Hz7m0Vt54!hkkihl-UNnZOiGlep0mH2AdI7CjpfS667glnQf1ULLB-yo-slC2uNjgP-wYAGEvHljGe_1jddM4uwN9_lWc8$ >
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