Re: [sumo-user] using Calibrator with routeProbe

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

The calibrator attribute 'freq' limits the period of insertion attempts. Supposedly this can conserve resources in a low traffic simulation but in our tests we always keep the value at it's default of 1. Setting it to 60 in your scenario, severely limits the achievable flow.

Am Fr., 25. Feb. 2022 um 00:48 Uhr schrieb Sasan Amini <aminissn@xxxxxxxxx>:

sorry! my bad :-/ I forgot to reduce the randomTrip factor. If you use a scale of 0.1 I think you get a reasonable demand. The calibrator is on a three-lane road and with aspiredFlow of 2500veh/h, but it only reaches up to about 700 veh/h. The insertionCheck doesn't seem to have any impact on the results.

On Thu, Feb 24, 2022 at 10:54 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Your simulation is completely jammed and thus the calibrator cannot insert anything. Or are you targeting mesosim?

Am Do., 24. Feb. 2022 um 15:15 Uhr schrieb Sasan Amini <aminissn@xxxxxxxxx>:

I see. I set the insertionCheck="all" and didn't work. With "none" I can see more vehicles being inserted visually but haven't checked the outputs yet. 

Here is a small example (so far I have tried on three different networks and all had the same issue of not inserting vehicles).

On Thu, Feb 24, 2022 at 2:31 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

insertionCheck is an input attribute. By setting 'insertionCheck="none", all insertion attempts succeed and this should be able to achieve the desired insertion flow (and lots of collisions). By setting a different list of checks you could narrow it down to the check that is most influential in preventing insertion (and this would help me in diagnosing the problem).

If you can boil it down to a small test case with bad behavior (at default insertionChecks), send all inputs to me.

regards,

Jakob

Am Mi., 23. Feb. 2022 um 18:22 Uhr schrieb Sasan Amini <aminissn@xxxxxxxxx>:

I am not sure if I can find the output of the attribute. I set it and looked at the log and tripinfo but couldn't find anything useful. But the calibrator is indeed inserting some vehicles which I see in both detector output and tripinfo. 

On Wed, Feb 23, 2022 at 4:28 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

I'd guess that insertion fails for some reason. You could try the new 'insertionCheck' feature to see which check it runs afoul of. https://github.com/eclipse/sumo/issues/10114

Am Mi., 23. Feb. 2022 um 16:23 Uhr schrieb Sasan Amini <aminissn@xxxxxxxxx>:

Dear all,

I was trying to test the calibrator for a network without any ODs following the instructions on: https://sumo.dlr.de/docs/Simulation/Calibrator.html.

I have created an additional file in which I define an edge calibrator to increase the flow on that edge to 2500 veh/h (just to make sure I can make it work). But it seems that the calibrator doesn't add that many vehicles. I can see in the detector output that it adds only 20 vehs. Is there something that I am missing? 

Thanks for the help.

Sasan 

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