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Re: [sumo-user] [EXTERNAL] Re: Define Input/Output Edges and Assign Random Traffic to Network
  • From: Michael Behrisch <oss@xxxxxxxxxxx>
  • Date: Thu, 15 Oct 2020 22:29:27 +0200
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Hi Xun,
I do not fully understand wha you are trying to achieve. The sources and
destinations are given and you want to assign them randomly to each
other? Or do you want random volumes between fixed pairs? The routes
should be shortest paths or the vehicles should turn randomly (according
to given probabilities) in the network but eventually reach a given
destination?

Best regards,
Michael

Am 14.10.20 um 23:51 schrieb Xun Liu:
> Hello Melanie,
> 
>  
> 
> Thanks for your response!
> 
>  
> 
> I have read this page about how to import O/D Matrices. The function
> that I am trying to accomplish is that a random traffic flow is assigned
> from the source edges and the traffic flow probabilities or directions
> inside the network(between source edges and interior edges, interior
> edges on different tier or from interior edges to the sink edges) would
> be determined based on the road network randomly and automatically. And
> at the end it would flow out from the respective sink edge.
> 
>  
> 
> I used the randomTrip.py and implemented an additional file with it. In
> the additional file I set up the TAZ with my source and sink edge
> information. However, the random route it generate still start from
> random edge, but not the assigned source edge. Do you have some advice
> to accomplish this function and could you please help me to solve this
> problem?
> 
>  
> 
> In the attachment is the additional file with TAZ information. Thanks!
> 
>  
> 
> Best,
> 
> Xun
> 
>  
> 
> *发件人:*sumo-user-bounces@xxxxxxxxxxx *代表 *Melanie.Weber@xxxxxx
> *发送时间:*2020年10月14日1:40
> *收件人:*sumo-user@xxxxxxxxxxx
> *主题:*[EXTERNAL] Re: [sumo-user] Define Input/Output Edges and Assign
> Random Traffic to Network
> 
>  
> 
> Hello Xun,
> 
>  
> 
> Maybe  https://sumo.dlr.de/docs/Demand/Importing_O/D_Matrices.html
> <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsumo.dlr.de%2Fdocs%2FDemand%2FImporting_O%2FD_Matrices.html&data=04%7C01%7Cxliu8%40villanova.edu%7C68b7311ba92d45c17fd608d87003abaf%7C765a8de5cf9444f09cafae5bf8cfa366%7C0%7C1%7C637382508351908547%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=MGA9BrlFOnWhSxqkxwSNzKXLqoC96DmGXt9ypQ5YUTU%3D&reserved=0>
> can help you.
> 
>  
> 
> Kind Regards,
> 
> Melanie
> 
>  
> 
> *Von:*sumo-user-bounces@xxxxxxxxxxx
> <mailto:sumo-user-bounces@xxxxxxxxxxx> <sumo-user-bounces@xxxxxxxxxxx
> <mailto:sumo-user-bounces@xxxxxxxxxxx>> *Im Auftrag von *Xun Liu
> *Gesendet:* Mittwoch, 14. Oktober 2020 01:28
> *An:* sumo-user@xxxxxxxxxxx <mailto:sumo-user@xxxxxxxxxxx>
> *Betreff:* [sumo-user] Define Input/Output Edges and Assign Random
> Traffic to Network
> 
>  
> 
> Hello everyone,
> 
>  
> 
> I met a problem about how to define the In-/Output Edges of a network.
> Now I have the ID of the In- and Output edges, could I use Traffic
> Assignment Zone(TAZ) file to define the In- and Output. And how could I
> assign a random traffic flow from the Input Edges into the network?
> 
>  
> 
> Best,
> 
> Xun
> 
> 
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