You could use the previously mentioned id of spacing out their departures over time and then adapt the until times with the same offset. An alternative would be to define the stops with only a short 'duration' instead of 'until'. Then compute the traveltime that would have result from 'until' based on tripinfo-output and stop-output.
Am Do., 18. März 2021 um 12:34 Uhr schrieb Chris Abraham < [email protected]>: > Hi Jakob. Sorry for resurrecting this thread. > > I had implemented as you suggested, and I thought it worked, but today I > noticed an error in the simulation results. > > All my routes had* `*stop`s which were defined with the `until` > attribute. This meant that, after the first vehicle had simulated, all the > other vehicles did not make any stops, since the time of the timesteps did > not reset after the first vehicle was finished. > > I gave it some thought, but I can't figure out a way to simulate all the > 2000 routes with their stops, without reloading the network each time... > > Regards, > Chris Abraham > > > On Tue, Mar 9, 2021 at 2:02 PM Jakob Erdmann <[email protected]> > wrote: > >> Again, the easiest solution is to put them in the same route file. To >> avoid interactions between the vehicles either space out their depart times >> by a few hours (depending on network size and maximum travel time) or set >> option --max-num-vehicles 1 (this will make the next vehicle start once the >> predecessor has arrived). >> >> Am Di., 9. März 2021 um 12:43 Uhr schrieb Chris Abraham < >> [email protected]>: >> >>> Thank you Jakob! I wish I had thought of that! Alas, I already >>> implemented it with net.getShortestPath. >>> >>> However, now that I've generated the 2000 route files, I am facing a >>> similar problem with simulating each of them. I want to simulate each of >>> them iteratively, without sumo re-loading the network each time. Is it >>> possible? >>> >>> Regards, >>> Chris >>> >>> On Tue, 9 Mar, 2021 at 08:59, Jakob Erdmann <[email protected]> >>> wrote: >>> >>> Hello, >>> The fastest and most efficient): call duarouter once will all the trip >>> files. >>> duaIterate does the same thing using subprocess.call but it does this >>> seperately for each file. >>> The only downside is that you have to use your own code the seperate the >>> trips into separate files (if needed) since duarouter will create a single >>> output file. >>> Note, that net.getShortestPath only considers distances not speeds. This >>> could lead to unexpected routes if there are some slow shortcuts in your >>> network. >>> You can also build routes using traci.simulation.findRoute >>> >>> regards, >>> Jakob >>> >>> >>> >>> Am Mo., 8. März 2021 um 13:06 Uhr schrieb Chris Abraham < >>> [email protected]>: >>> >>>> After scouring the docs the whole day, the only solution I can think of >>>> is to use getShortestPath() from sumolib.net.Net >>>> <https://sumo.dlr.de/daily/pydoc/sumolib.net.html#Net>, and build a >>>> rou.xml file from its outputs. Does that sound possible? I was hoping >>>> for an easier way. Also I wanted to double check that the function is >>>> maintained >>>> before I start coding. >>>> >>>> Chris >>>> >>>> On Mon, 8 Mar, 2021 at 07:37, Chris Abraham <[email protected]> >>>> wrote: >>>> >>>> Hello all, >>>> >>>> I currently have around 2000 trip files, each describing the trip that >>>> a vehicle makes via a series of stops, as follows: >>>> >>>> <trip id="Taxi1_Day1" type="eTaxi" depart="53564" from="173819953" >>>> to="802374502#1"> >>>> <stop lane="173819953_0" until="53565"/> >>>> <stop lane="68612608#0_0" until="53650"/> >>>> ⋮ >>>> </trip> >>>> >>>> Each trip file has around 750 stops. My aim is to generate a simulation >>>> corresponding to each trip file, which routes between the stops of that >>>> trip file. All the trip files correspond to the same network file, which >>>> is around 480 MB big. I want to do the route generation from Python >>>> preferably. >>>> >>>> My current approach is to run duaIterate.main() (from >>>> $SUMO_TOOLS/assign) for each of the trips. However, this is taking >>>> very long. I think the problem is that duaIterate.main() takes a lot >>>> of time to load the network each time. It also takes almost all of my >>>> RAM to load the network, so I can't run the process for multiple trip files >>>> concurrently. It would be great if duaIterate.main() provided a way to >>>> pass in the network *object* (i.e. sumolib.net.Net), rather than the >>>> *path* to the network file. >>>> >>>> If I could do that, I think it would take much quicker, and I could >>>> run multiple duaIterate processes concurrently, without running out of ram. >>>> Do you know if it is possible, or if there is a better approach? >>>> >>>> Regards, >>>> Chris >>>> >>>> _______________________________________________ >>>> 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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