Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [sumo-user] Increased variation when using DFROUTER
I used the latest development version and got this error:

Traceback (most recent call last):
  File "detector/edgeDataFromFlow.py", line 124, in <module>
    main(get_options())
  File "detector/edgeDataFromFlow.py", line 86, in main
    beginM = int(sumolib.miscutils.parseTime(options.begin, 60) / 60)
TypeError: parseTime() takes exactly 1 argument (2 given)

I opened the code and changed this:

    beginM = int(sumolib.miscutils.parseTime(options.begin, 60) / 60)

    intervalM = int(sumolib.miscutils.parseTime(options.interval, 60) / 60)

    endM = min(int(sumolib.miscutils.parseTime(options.end, 60) / 60), tMax)


to this:

    beginM = int(sumolib.miscutils.parseTime(options.begin) / 60)

    intervalM = int(sumolib.miscutils.parseTime(options.interval) / 60)

    endM = min(int(sumolib.miscutils.parseTime(options.end) / 60), tMax)


I changed the input interval and end times from minutes to seconds and it ran.  But the flow rate did not match my measured data well enough.  For example, some exit ramps had a flow of 0 for almost the entire simulation when they should have had cars constantly using them.  I'm not too experienced with Python, so I do not know if that edit I made is the reason for the error.  

I'm not sure where my error is, I wanted to make sure that the following steps made sense:
1) randomTrips.py to get the route file used in edgeDataFromFlow
2) edgeDataFromFlow.py to get the edgeData file
3) routeSampler.py for the route file used in the simulation
4) DFRouter for a validation file and detector file
5) SUMO 



On Tue, Aug 25, 2020 at 2:06 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
Unfortunately, the 1.6.0 version of routeSampler did not yet handle data intervals. This is fixed in the latest development version (https://sumo.dlr.de/docs/Downloads.php#sumo_-_latest_development_version).
However, I would recommend setting the option "--interval 900" to aggregate the interval data to larger time slices. (or larger depending on the typical travel time of vehicles within your network).

Am Mo., 24. Aug. 2020 um 18:34 Uhr schrieb Sumo User <sumoquestions@xxxxxxxxx>:
Thank you for your response Jakob.  

I am working on using routeSampler.py, but have run into a problem using edgeDataFromFlow.py.  My flow data that was previously used as a flow input file to DFRouter is three hours of data in 5 minute intervals.  When I run edgeDataFromFlow, I get an end time of 3600 seconds, but for three hours I would expect 10800.  I looked in the Python file and did not see an input for end time, so I was wondering how to change it. 

Thank you,
Alex

On Thu, Aug 20, 2020 at 2:08 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
Unfortunately, DFRouter does not provide additional customization features. Consider using routeSampler.py instead.
However, this will only give meaningful changes if the measurement data does not constrain the possible route combinations too strongly.
You could also try to define a stronger variation in vehicle speeds by using the speedDev attribute and set sumo option --random in addition to dfrouter option --random.

Am Do., 20. Aug. 2020 um 19:04 Uhr schrieb Sumo User <sumoquestions@xxxxxxxxx>:
Hello, 

I have a set of measured data from a highway on a specific afternoon.  When use DFROUTER to run a simulation, the validation file matches the measured data in flow and speed well.  But after running many simulations (>500), I can see that all the validation files are extremely similar to each other.  What I want is to use my measured data as a base, but have more variation so the simulation does not provide extremely similar outputs each time.  I have set --random to true and --randomize-flows to true, but that does not provide the variation that I seek. I want to know if it is possible to generate outputs that are still close to my measured data, but vary between simulations.

Any ideas are appreciated!!
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user
_______________________________________________
sumo-user mailing list
sumo-user@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user

Back to the top