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omnet++veins

What are the units of distance in the MiXiM based Veins simulation scenarios?

Hello StackEx community.

I am running a scenario in Veins 3.0 where I am using the commandDistanceRequest()function to find out the distance between two nodes. I am getting values which, I suppose, is in the domain of the MiXiM - OMNeT++ simulation play-field.

My questions here are:

  1. What is the unit of this distance returned by commandDistanceRequest()?

  2. I know that OMNeT++ and SUMO use different sets of coordinate spaces. Is it different for both of them or only the coordinate space differs here?

Solution
    1. The unit returned by the commandDistanceRequest() is in m (meters)

    Link: Two types of coordinate systems are currently in general use in geography: the geographical coordinate system and the rectangular (also called Cartesian) coordinate system.

    1. SUMO and OMNeT++ use Cartesian coordinates both. However in SUMO the y axis is flipped and there is an offset.