Hello!
I don't understand why am I getting different data when starting the project from the command line and directly from the program window.
Also what are mandatory and optional parameters? I am using -p and -c
You should get the same results irrespective of which way you are running (I can confirm this from my personal experience of running both ways).
The mandatory parameters are required to execute the simulation. Without these mandatory parameters, WinProp doesn't know what you are trying to simulate (like propagation or network analysis or both, etc.). Where as the optional parameters are additional options for extra operations.
With -c you are asking the program to be closed after execution. This is optional and you can run your propagation analysis even without -c. Hope this helps.