I noticed that setting the seed-set in the "ini" file for a Veins-OMNET++ simulation, will only affect the communication-related values by comparing different runs at a specific time. i.e. at a particular time for different runs, the vehicles' mobilities values (x,y, speed, direction) are relatively the same. Could you please confirm that?
However, when I set the <seed value="seedValue" /> in the "mapname.launchd.xml" file, the mobilities of the vehicles change between runs. My second question is, Is changing the seed for SUMO affect the traffic flow (veh/h) set in the route file (.rou.xml)?
seed-set controls OMNeT++/Veins parameters defined as random variables in your omnetpp.ini file, something like **.packetSize = uniform(100B, 500B). SUMO's seed does the same job on the SUMO side. I assume you use VeinsInetMobility in your scenario -- in that case your speed and positions distribution is controlled by SUMO's seed since all computations are happening there, if you use any of inet's internal mobilities and set it in omnetpp.inifile -- then it is controlled by seed-set.