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Re: [sumo-user] cannot generate right traffic flow output through flowrouter.py
  • From: Michael Behrisch <oss@xxxxxxxxxxx>
  • Date: Wed, 17 Apr 2019 18:57:46 +0200
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Hi Kathy,
your flows file is broken. It contains ":" in several places where a ";"
is needed to separate the detector id and the time.

Best regards,
Michael

Am 17.04.19 um 15:08 schrieb kathy:
> Dear SUMO-community,
> 
> I am working on generating a simulation with vehicle flow data in sumo.The
> area is a region of a city, and the flow data of main streets in 24h are
> given. The road network of this area I have exported from Openstreetmap and
> converted to SUMO net file. From the observation data I defined about one
> hundred detectors and their flows in detectors.xml and flows.txt, it
> includes 7 source detectors and 8 sink detectors. The running of
> flowrouter.py has no problem, and I can also run the simulation in SUMO-GUI,
> but it seems that the traffic flow is not right, I run the flowFromRoutes.py
> to compare the output flow with the input flow, it shows :
> det_003;176.0;176.0;0.0
> det_003_opp;170.0;170.0;0.0
> det_004;36.0;36.0;0.0
> #;avgRouteFlow;avgDetFlow;avgDev;RMSE;RMSPE;GEH;GEH%
> #;127.33333333333333;127.33333333333333;0.0;0.0;0.0;0.0;100.0
> 
> and this is the result of running flowrouter.py:
> Reading net
> 4583 edges read
> Reading detectors
> Loaded 7 sources and 8 sinks from detector file. Added 0 sources and 0 sinks
> from the network
> Reading flows
> Calculating routes
> 7 sources, 7 unlimited
> 8 sinks, 7 unlimited
> Writing 248 vehicles from 3 sources between time 0 and 3600
>   unused sources: -161678034#0 27920078#0 32923867#0 64464430
> 
> I tried to delete the type definition in detectors.xml and use
> --revalidate-detectors, the result changed a little bit, but still like
> this, very few routes and flows are generted out, and the output flow is too
> much different as the input. I uploaded the files and one diagram for the
> detectors. Could anyone help me to get through this please? Many thanksin
> advance!
> 
> innenstadt_ignore_forum.7z
> <http://sumo-user-mailing-list.90755.n8.nabble.com/file/t159/innenstadt_ignore_forum.7z>  
> best regards,
> 
> Kathy
> 
> 
> 
> 
> --
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