Re: [sumo-user] Delay in position Sumo-gui, VEINS

[Pavlos B. <pba...@gm...>]

So if i a execute the command change lane when the positions are not
accurate due to some small miscalculation e.g 0.8m and this results in a
crush, with the lanechangemode at 513 this will be avoided?


Many thanks,
Pavlos


2014-04-08 11:37 GMT+03:00 Jakob Erdmann <nam...@go...>:

> Hello,
> if you use laneChangeMode 0b1000000001 = 513
> vehicles will only perform strategic changes autonomously but will ensure
> that TraCI requests are handled safely.
> see http://sumo-sim.org/wiki/TraCI/Change_Vehicle_State for the meaning
> of all bits
> regards,
> Jakob
>
>
> 2014-04-08 9:44 GMT+02:00 Pavlos Basaras <pba...@gm...>:
>
> Sorry for sendind this message only to you. Please let me repost it.
>>
>> Thank you very much for your answer.
>>
>> One last thing that i want to better understand. I have disabled tha
>> default lane change of sumo by using strategic mode. I use the command
>> change lane to force vehicles based on some criteria to change a lane. I
>> exchange information with neighboring vehicle through beacons. So i have
>> the neighbor position and velocity at the time it sent the beacon.
>>
>> To calculate the actual distance between me and a neighbor (at the time
>> of my decision in changing the lane) i multiply  the velocity of the
>> neighbor vehicle with (simTime()-time that received the beacon) and add it
>> to the position i got from the beacon.
>>
>> Should i add another 0.1 seconds to the time interval where i compute the
>> actual distance of my neighbor when the command lane change is about to be
>> executed?
>>
>> For example vehicle  3.4 changing down to the lane of 2.4 will be decided
>> in a very small distance gap so the slightest miscalculation in his
>> position is a problem.
>>
>> Any advice?
>>
>> [image: Ενσωματωμένη εικόνα 1]
>>
>> Many thanks again,
>> Pavlos
>>
>>
>> 2014-04-07 9:51 GMT+03:00 Jakob Erdmann <nam...@go...>:
>>
>>  Hello,
>>> that is to be expected given my previous reply.
>>> Upgrade to the latest svn version if you want to use the fix. Or simply
>>> subtract 1 from the simulation step shown in the GUI in your head.
>>> regards,
>>> Jakob
>>>
>>>
>>> 2014-04-06 8:53 GMT+02:00 Pavlos Basaras <pba...@gm...>:
>>>
>>> What i get with sumo version 20 and veins is:
>>>>
>>>>  Warning: Teleporting vehicle 'flow3.1'; collision with 'flow3.4',
>>>> lane='1to2_2', gap=-0.82, time=132.20 stage=laneChange
>>>>
>>>> when i check the position in gui it seems that the vehicle that
>>>> collides has not completely overtaken the next vehicle but when i am
>>>> printing their position with traci->getCurrentPosition() they are at
>>>> distance of 5 or 6 meters , i.e the the vehicle has already passed the
>>>> other vehicle and is ahead 5 meters. Any advise?
>>>>
>>>> many thanks,
>>>> Pavlos
>>>>
>>>>
>>>> 2014-04-01 12:06 GMT+03:00 Jakob Erdmann <nam...@go...>:
>>>>
>>>> Hello,
>>>>> sumo-gui shows you the state that corresponds to the previous time
>>>>> step.
>>>>> This is fixed in the very latest svn revision [16093].
>>>>> regards,
>>>>> Jakob
>>>>>
>>>>>
>>>>> 2014-03-30 12:16 GMT+02:00 Pavlos Basaras <pba...@gm...>:
>>>>>
>>>>>>  Hello,
>>>>>>
>>>>>> does the sumo gui induce some delay in visualizing the vehicles? I use
>>>>>> traci->getCurrentPosition() to get a vehicles position and what i see
>>>>>> in
>>>>>> gui in the x-axis is a little smaller than what i get from traci at
>>>>>> about
>>>>>> maybe 10m or so.
>>>>>>
>>>>>> best,
>>>>>> Pavlos
>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>