Thanks, Jakob!

Em qua, 25 de mar de 2020 18:08, Jakob Erdmann <namdre.s...@gmail.com>
escreveu:

> Some outputs such as meanData output allow setting begin and end times for
> their output.
> For fcd-output this is not possible directly. There are several
> workarounds:
> - export output for the whole simulation, then cut of the undesired parts
> in post-processing (the output is order by time which makes this easy)
> - save the simulation state at some point. Then load the simulation from
> this state and start the output (
> https://sumo.dlr.de/docs/Simulation/SaveAndLoad.html#know_issues)
> - only equip some of the vehicles with a fcd device but set a large radius
> that covers the whole network (device.fcd.radius). The output will then be
> limited to the time where these vehicles active
>
> regards,
> Jakob
>
> Am Mi., 25. März 2020 um 22:00 Uhr schrieb Leonardo Solé Rodrigues <
> leos...@poli.ufrj.br>:
>
>> Thanks for the reply.
>> Is there a way to simulate a longer time period, but just export a
>> smaller window of it?
>>
>> Em qua, 25 de mar de 2020 17:48, Jakob Erdmann <namdre.s...@gmail.com>
>> escreveu:
>>
>>> Hello,
>>> the low number if vehicles at the start is typical because the networks
>>> starts empty and has to fill up.
>>> The high number of vehicles later in the simulation occurs because that
>>> scenario is horribly congested. Mostly due issues with the network (
>>> https://sumo.dlr.de/docs/Data/Scenarios/TAPASCologne.html#quality). I'm
>>> planning to release an updated version of the scenario this year.
>>> Until then you could down-scale the traffic demand to avoid the worst
>>> congestion (--scale 0.5 or lower)
>>>
>>> regards,
>>> Jakob
>>>
>>>
>>> Am Mi., 25. März 2020 um 21:20 Uhr schrieb Leonardo Solé Rodrigues <
>>> leos...@poli.ufrj.br>:
>>>
>>>> I'm new to SUMO, and I'm trying to export some traces, so I can use
>>>> them in python. I exported some FCD Output (xml) files from a
>>>> simulation, each with a 10 minute length, at different starting times. I'm
>>>> using the traces from this project
>>>> <http://kolntrace.project.citi-lab.fr/>. They all go from around 20
>>>> vehicles in the starting seconds to around 10000 to 20000 in the last
>>>> seconds. I exported these files using the --fcd-output option, and giving a
>>>> begin and end times. Why do the number of vehicles change so much? Is there
>>>> a way I can fix this?
>>>>
>>>> Below is a plot of the number of vehicles in each timestep in one of
>>>> the files.
>>>>
>>>> --
>>>> Leonardo Solé Rodrigues
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