Hello, if you really need uniform distibution I would suggest a simple network (like a grid) and manually specified routes. regards, Jakob
2013/11/5 Daniel Brown <[email protected]> > Hi Jakob, > > What do you mean I may use synthetic networks to achieve uniform > distribution? > > Is it possible to achieve uniform distribution if I use grid network > and don't set traffic lights? Maybe I also need to manually specify > the edges of each route, not use randomTrips.py to choose only > source/destination edge. > > Thanks. > > Daniel > > 2013/11/1 Jakob Erdmann <[email protected]>: > > Hello, > > the default settings of randomTrips.py give equal probability for each > > edge to be used as a start/destination edge. > > However, the routes themselves are computed as the shortest path > > between start and destination. In a real-life network some edges will > > be more "important" and be in many possible shortest paths while other > > edges will naturally be less used. > > I think what you are trying to achieve is very unlikely in a real-life > > network. Furthermore if your network uses traffic lights and these are > > not well tuned, you may get big jams which can further widen the > > discrepancy in edge usage. > > Your best bet is to play around with synthetic networks to achieve > > uniform distribution. > > regards, > > Jakob > > > > 2013/11/1 Brown Daniel <[email protected]>: > >> Hello, > >> > >> > >> > >> I want to generate vehicle movement to have vehicles uniformly running > in > >> road network. Because I need a large number of vehicles, I use > >> randomTrips.py tool to choose source and destination randomly. But, > during > >> the simulation, vehicles are not uniformly distributed in the network. > Some > >> edges are occupied by many vehicles while other edges have no vehicles. > >> > >> > >> > >> How can I generate a vehicle route to have a uniform distribution of > >> vehicle movement in the network? > >> > >> > >> > >> Thanks > >> > >> > >> Daniel > >> > ------------------------------------------------------------------------------ > >> Android is increasing in popularity, but the open development platform > that > >> developers love is also attractive to malware creators. Download this > white > >> paper to learn more about secure code signing practices that can help > keep > >> Android apps secure. > >> > http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk > >> _______________________________________________ > >> sumo-user mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/sumo-user > > > ------------------------------------------------------------------------------ > November Webinars for C, C++, Fortran Developers > Accelerate application performance with scalable programming models. > Explore > techniques for threading, error checking, porting, and tuning. Get the most > from the latest Intel processors and coprocessors. See abstracts and > register > http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk > _______________________________________________ > sumo-user mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sumo-user > ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
