[sumo-user] Collect Edge stat

[mohsen hs <mohsenhs82@xxxxxxxxx>]

Hello there, 

I would like to collect some stats about the edges such as  length, mean speed, mean density,....... 

I know  a few approaches, and I think the second one is the easiest/fastest approach but I have some difficulty to make it practical:

1-using inductive loop detectors-> use additional file and create a loop for each lane-> time consuming, is there any existing script for this?

2- use MeanData-> I am not sure how I can instantiate this (http://sumo.dlr.de/wiki/Simulation/Output/Lane-_or_Edge-based_Traffic_Measures), shall it be done through additional file (Is there any example for using this method)? what does id mean here?

id

id (string)

The id of this set of measurements. This user-defined id is needed for differentiating between multiple sets of measurements in a single output file.

Wiki says the id of measurement, so what does this actually mean? where and how shall I define the measurement formula? Is not this the edge id?

How many output it generates? one for each id? I need to use  mpl_dump_onNet.py for visulizing these outputs? Is there any existing script that can read these output?

3. Use --full-output -> makes the simulation very slow

4. TracCI-> slow down the simulation, I may just use this to get the length of all edges and save them in my database, if I cannot get the length in any other way.

I would be very grateful if you could advise.

Many thanks

Mohsen