1) in your scenario, the flow is mostly affected by the traffic lights rather than the vehicle density. Thus it will look different from a motorway diagram 2) the flow data points you are using are for individual edges. If you need a whole-network diagram you need to sum up the edges flows and compute an average density. Also, the flow is averaged over 300s (more than one traffic light cycle). This means you are not seeing peak flow on green but the average flow including stopped-on-red 3) I recommend that you use 'entered + departed' for you flow computation. Also, there are probably edges that have low vehicle counts but downstream congestion prevents vehicles from advancing and thus gives zero flow.
regards, Jakob Am Do., 11. Juni 2020 um 12:20 Uhr schrieb Amirhosein Karbasi < [email protected]>: > Hello, > > I want to draw a flow density diagram. My network includes 64 > intersections. I ran a simulation (1800s) and use an additional file for > Edge-based output (freq is 300). I drew a flow density diagram in excel > based on the Edge-based output file and I calculated flow according to “ > *entered* * 3600 / *freq*”. Now I have 3 problems: > > 1. I think my flow density diagram is not similar to regular flow density > diagrams. (there are a png in attach file)(Simulation time = 1800s). > > 2. When I drew a plot my max flow is about 852 (for 1800s, 2400s, and > full-time simulation max flow is approximately 1000) and I think max flow > should be bigger than 20000 for a network like this. > > 3. I have too many zero flows. > > I saw various topics about this on the Sumo website but my problems are > not solved yet. > > I sent my whole files too. please say me what I am doing wrong? > > Thank you so much. > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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