Dear Jakob, Is any way that I can define a flow that follows the Poisson distribution and at the same time control its traffic volume in each hour? Because I want to investigate the impacts of different demand ratios on intersection approaches.
Thanks, Yajun On Mon, 7 Mar 2022 at 19:31, Jakob Erdmann <[email protected]> wrote: > When using a a flow with 'probability', insertion follows a binomial > distribution. Your example should be a good fit to a poisson distribution. > See here, for rules of thumb on approximation: > https://en.wikipedia.org/wiki/Binomial_distribution#Poisson_approximation > > Note that you cannot not set 'end' and 'number' at the same time when > using 'probability'. Either you set a fixed number of random trials ('end') > or you let the flow run until it has emitted a fixed number of vehicles > ('number'). > > Am Mo., 7. März 2022 um 16:35 Uhr schrieb Yajun She <[email protected]>: > >> Dear all, >> >> How to model a flow that a vehicle will be emitted following a Poisson >> distribution, and at the same time with a given traffic volume? >> >> For example, I tried to use attributes of "probability" and "number": >> <routes> >> <vType id="normal_car" vClass="passenger" departspeed="13.89" >> maxSpeed="13.89" /> >> >> <flow id="upflow" type="normal_car" begin="0" end="5000" >> probability="0.01" number="1200" from="downin" to="upout" departPos="last"/> >> </routes> >> >> I am not sure the range of probability that will lead the vehicles to >> follow a Poisson distribution? >> >> Thanks, >> Yajun >> >> >> >> _______________________________________________ >> 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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