| Re: [sumo-user] Tool to Plot value of SSM |
Hello Jakob,
Thank you very much for your answer.
I’m looking and trying to analyze some scenario, which have a very low value of TTC. But I remark that in some case there is an error or an issue in the calculation of the TTC.
I got a value of TTC = 0 in the Case that you can see in the Picture 1. That happened at the time 2775,90 . But as you can see it’s not possible that, the TTC = 0 because the “Encounter Type” here is equal to “2”. When we see the formula for calculation of TTC :
TTC = space_gap/speed-difference.
The space gap between the ego and the leader vehicle (id=2768) is not equal to zeros.
And it’s why I think it’s really strange to have a TTC-value equal to zero in such case.
I sent also in the attached, the SUMO model that I used, thus you can reproduce that.
at the moment I still using the version 1.0.0.
Thank you very much for your helps…..
Br
Christian
Von: sumo-user-bounces@xxxxxxxxxxx [mailto:sumo-user-bounces@
eclipse.org ] Im Auftrag von Jakob Erdmann
Gesendet: Dienstag, 11. September 2018 08:00
An: Sumo project User discussions
Betreff: Re: [sumo-user] Tool to Plot value of SSM
In 1.0.0 you can use tools/plot_trajectories.py (http://sumo.dlr.de/wiki/
Tools/Visualization#plot_ ) but this requires an fcd-output file.trajectories.py You can get fcd-output for only the ego vehicle by setting the options
--fcd-output fcd.xml
--fdc-output.explicit ego-car
regards,
Jakob
2018-09-10 14:58 GMT+02:00 <christian.damdjowabo@xxxxxx>:
Hello Jakob, hello everybody,
I wanted to analyze some critical scenario. For that reason I used ssm on the “ego-car”. The Output file is an xml file with contain the value of TTC as example. By adding the parameter key="device.ssm.trajectories" value="true" /> it’s possible to me to get also the trajectory. Thus it would be possible to me to check and analyze the scenario, which have the low value of TTC.
My question now is to know if we have some script, which can help to plot after the simulation the critical scenario.
Thank you very much
Br
Christian
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