That helps. Thanks Jakob! Jakob Erdmann <[email protected]> 于2023年5月1日周一 21:47写道：
> > As a follow-up question, is there a way to set to a single direction > (one-way) road, using similar commands? I did not find a command like this > by using netgenerate. > > --bidi-probability 0 > > add --flip-y-axis if you need to change the direction. > > Am Di., 2. Mai 2023 um 04:08 Uhr schrieb Chen Di <[email protected]>: > >> Hi Ruud, >> >> Thanks for sharing you methods! >> I just figured out to plot a more 'perfect' circle by adding more >> junctions and then converting it to geometry points. Given the perfect >> shape, I'm thinking another way of computing the distance: based on the two >> vehicles' coordinates, compute the arc length. And the arc length is the >> relative distance. >> >> Best, >> Di >> >> Ruud van Gaal <[email protected]> 于2023年5月1日周一 01:00写道： >> >>> Hi Cindy, >>> >>> I used the 'repeat' attribute of the 'route' command before to do loops, >>> instead of using re-routers; that was much easier. That may affect the >>> outcome of vehicle.getdistance(). >>> >>> >>> * <route id="r_ego" repeat="10000" edges="a b c d" />* >>> >>> An alternative is to somehow find out the circle perimeter and modulo >>> the distance: veh_distance = relative_distance % perimiter. >>> One other alternative is to consider the ring road a pure circle, then >>> take both vehicle's forward vectors, generate a circle through those two >>> points and calculate the circular distance. Mathematically perhaps a bit >>> more unstable than just using the x/y coordinates and calculating a >>> distance. I would go for the first method though: try to cut off 1 full >>> perimeter if the distance seems too large. The hard part is then perhaps >>> figuring out the perimeter. >>> >>> Kind regards, >>> Ruud >>> >>> >>> On Mon, May 1, 2023 at 6:20 AM Chen Di <[email protected]> wrote: >>> >>>> Hi, >>>> >>>> I have drawn a ring road following this >>>> <https://sumo.dlr.de/docs/Tutorials/Driving_in_Circles.html> tutorial, >>>> where gives me a circle that is not perfect (not smooth and the radius at >>>> different position may vary a bit). I also had re-routers so that vehicles >>>> drive for multiple rounds. >>>> >>>> I need to compute the relative distance between vehicles. I tried the >>>> function vehice.getdistance(). However, this will give me some errors in >>>> calculation. For example, if vehicle A in its second round is close to >>>> vehicle B in its third round, then the relative distance is a large value >>>> that contains a perimeter of the ring road. >>>> >>>> I also thought about using x,y coordinates and the angle, and convert >>>> it to distance. However, this seems not accurate, given that my ring road >>>> is not a perfect circle. >>>> >>>> I am wondering if there are any good ways to compute relative distance >>>> correctly in this case. Thanks! >>>> >>>> Best, >>>> Cindy >>>> _______________________________________________ >>>> 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 >>> >> _______________________________________________ >> 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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