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Re: [sumo-user] Validation of detected data
You can find cadyts input files in https://github.com/eclipse/sumo/tree/master/tests/tools/assign/calibration
If you put together a simple input example where flowrouter fails I can take a look.

regards,
Jakob

Am Do., 21. März 2019 um 16:10 Uhr schrieb Kevin Malena <kevin.malena@xxxxxxxxxxxxxxxx>:

Thank you for your answer Jakob.

 

Obviously I do know that this problem is highly underderminated and complex, but even for just single examplary routes flowrouter (and especially it’s the respect-zero function) doesn’t really do what I want it to.

In combination with the calibrators it works pretty well, but I thought there could be a more elegant solution which I don’t see because I am very new to SUMO.

 

Maybe u or someone else can explain me how to create a <REALFLOWS>-file in cadytsIterate.py because i wanna give it a try just to compare the results.

The <REALFLOWS>-file has to be a XML-file in form of:

<measurements>

    <singlelink link="1to21" start="25200" end="32400" value="750" stddev="8" type="COUNT_VEH"/>

    <singlelink link="1to22" start="25200" end="32400" value="250" stddev="8" type="COUNT_VEH"/>

</measurements>

 

 

I converted my detector data to the following format which is compatible for flowrouter:

 

Detector;Time;qPKW;vPKW

Detektor_Nummer_16_unten;0;2;10

Detektor_Nummer_1_unten;1;1;11

Detektor_Nummer_11_unten;2;2;13

Detektor_Nummer_2_unten;0;3;9

Detektor_Nummer_8_unten;0;2;10

Detektor_Nummer_13_oben;1;1;12

Detektor_Nummer_7_oben;1;2;12

…

 

With help of the additional file I can also figure out the lane and exact position of those defined detectors.

 

I suppose the <REALFLOWS>-file in cadytsIterate.py uses aggregated data for the time span start to end on the different lanes, but I am not sure.

 

Thanks & Cheers,

 

Kevin

 

 

 

Von: sumo-user-bounces@xxxxxxxxxxx [mailto:sumo-user-bounces@xxxxxxxxxxx] Im Auftrag von Jakob Erdmann
Gesendet: Donnerstag, 21. März 2019 13:44
An: Sumo project User discussions
Betreff: Re: [sumo-user] Validation of detected data

 

The problem flowrouter has to solve in a city network is strongly underdetermined. There are plenty of knobs and dials to improve the result (among other things you can forbid explicit routes O/D-pairs.

You could also try cadyts which adapts demand levels to detectors for a pre-determined set of routes:

 

regards,

Jakob

 

 

Am Mi., 20. März 2019 um 13:21 Uhr schrieb Kevin Malena <kevin.malena@xxxxxxxxxxxxxxxx>:

Hey…

 

I want to validate detected data in a sumo network of my city (at different spots i placed sensors to detect every incoming and outgoing vehicle with speed, arrival time and type).

I triedto use flowrouter, but the generated routes don’t really fit the data.

Right now I implement a combination of the generated routes and flows by flowrouter with the ‚dynamic‘ calibrators using route probes (see docu: Building a scenario without knowledge of routes, based on flow measurements).

Do you know about a different method like flowrouter which is more precise?

 

Thanks,

Kevin

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