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Re: [sumo-user] [EXTERNAL] Re: Edge-based Traffic Measures (meandata) fail to detect left vehicle
  • From: Michael Behrisch <oss@xxxxxxxxxxx>
  • Date: Mon, 2 Nov 2020 22:18:11 +0100
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Hi,
there are some problems with the scenario but I think the most obviuos
is that there are very short edges around the junctions which have a
length which is larger than the visible length. I did not verify this in
detail yet but this could lead to vehicles being visually on the edge
when they are in fact not.

Best regards,
Michael

Am 27.10.20 um 06:17 schrieb Xun Liu:
> Hello Michael,
> 
> It seems like is not this problem. The error interval is from 240-270, I have tried different time interval, such as from 239-273, but one car still can't be detected. Therefore, the meandata exported data shows there is still one car in the edge. But the SUMO-Gui shows all cars flow out. 
> 
> In the attachment is the network, route, additional and configuration documents. Could you please check it? The problem edge is 104524034#0, the error occurred at the 9th interval from 240-270s. Thanks!
> 
> Best,
> Xun
> -----邮件原件-----
> 发件人: sumo-user-bounces@xxxxxxxxxxx 代表 Michael Behrisch
> 发送时间: 2020年10月24日 16:39
> 收件人: sumo-user@xxxxxxxxxxx
> 主题: [EXTERNAL] Re: [sumo-user] Edge-based Traffic Measures (meandata) fail to detect left vehicle
> 
> Hi Xun,
> is this an off by one error (i.e. the vehicle is detected in the next interval)? Then please note that the meandata end time is excluded from the interval. If not, please try to send your scenario for further inspection.
> 
> Best regards,
> Michael
> 
> Am 23.10.20 um 20:37 schrieb Xun Liu:
>> Hi everyone,
>>
>>  
>>
>> I am testing to use the Edge-based Traffic Measures 
>> <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsum
>> o.dlr.de%2Fdocs%2FSimulation%2FOutput%2FLane-_or_Edge-based_Traffic_Me
>> asures.html&amp;data=04%7C01%7Cxliu8%40villanova.edu%7C9c6da049ace7419
>> 9de9608d8785cde3b%7C765a8de5cf9444f09cafae5bf8cfa366%7C0%7C1%7C6373916
>> 87562379742%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMz
>> IiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=twuA7zhjiuY6R0nLaYAX
>> V5WoZeGBqoRjv7n4%2FR4Qqhk%3D&amp;reserved=0>
>> (meandata) to export the number of vehicle that left the edges in the 
>> network during the designed interval. And I found that in some 
>> interval, this function can’t detect all the vehicles that left the 
>> edge, for example from the SUMO-GUI simulation, there are 2 vehicles 
>> left the edge but the output data shows only one. Has someone also 
>> occurred this problem and is there some suggestions to solve this problem?
>>
>>  
>>
>> Best,
>>
>> Xun
>>
>>
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>>
> 
> 
> 
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