Re: [sumo-dev] Adding a Traci simulation command to get the closest junc

[Arslane Hamza Cherif <arslane.hamzacherif@xxxxxxxxx>]

Hello Dear sumo-dev,

First of all, excuse me if I am missing something or doing it wrong, it is the first time that I contribute to an open-source project, but of course not the first time that I use SUMO,

In fact, I had worked during the six last years with SUMO and Veins, and I really appreciate these tools, 2 years ago I was looking for a solution to my problem, and I realised that It was impossible with an old version of SUMO, so I switched to a solution based on Python, SumoLib and Networkx API.

Now lets me explain the problem, and how I think that is possible to solve it (I will appreciate any help in this sense, to guide me for my first contribution)

Problem: Say for instance that you have a VehX that follows a specific route that is passing by multiple junctions (e.g: Junctions: A, B, C, D), what I want is to identify the closest one relative to another junction Z that is not in the current route of the vehicle. I asked the question two years ago here: https://sourceforge.net/p/sumo/mailman/message/35079189/ 

However, at that time I was using an old version of SUMO that does not include the command (0x83) (http://sumo.dlr.de/wiki/TraCI/Simulation_Value_Retrieval)

Maybe it is possible to implement a new command that will achieve this by:

1. Identifying the junctions in a current route of VehX
2. Computing the driving distance (or air distance if needed) between junctions (A,Z), (B,Z), (C,Z) & (D,Z)
   
3. Returning the junction with the shortest distance among the 4 junctions

So, any advice on how I can do it ? from where can I start?

Thank you very much for your time,

Best Regards,
Arslane HAMZA-CHERIF

Le mer. 9 janv. 2019 à 10:55, Arslane Hamza Cherif <hc.arslan90@xxxxxxxxx> a écrit :

Hello Dear sumo-dev,

First of all, excuse me if I am missing something or doing it wrong, it is the first time that I contribute to an open-source project, but of course not the first time that I use SUMO,

In fact, I had worked during the six last years with SUMO and Veins, and I really appreciate these tools, 2 years ago I was looking for a solution to my problem, and I realised that It was impossible with an old version of SUMO, so I switched to a solution based on Python, SumoLib and Networkx API.

Now lets me explain the problem, and how I think that is possible to solve it (I will appreciate any help in this sense, to guide me for my first contribution)

Problem: Say for instance that you have a VehX that follows a specific route that is passing by multiple junctions (e.g: Junctions: A, B, C, D), what I want is to identify the closest one relative to another junction Z that is not in the current route of the vehicle. I asked the question two years ago here: https://sourceforge.net/p/sumo/mailman/message/35079189/ 

However, at that time I was using an old version of SUMO that does not include the command (0x83) (http://sumo.dlr.de/wiki/TraCI/Simulation_Value_Retrieval)

Maybe it is possible to implement a new command that will achieve this by:

1. Identifying the junctions in a current route of VehX
2. Computing the driving distance (or air distance if needed) between junctions (A,Z), (B,Z), (C,Z) & (D,Z)
   
3. Returning the junction with the shortest distance among the 4 junctions

So, any advice on how I can do it ? from where can I start?

Thank you very much for your time,

Best Regards,
Arslane HAMZA-CHERIF