[Archive] sc velocity

Message by luo xiaoming:
Is there anyone who know how to set the parameter “scveloX/scveloX/scveloX”? Why every time I set a value to them, the program will produce errors!

Message by Jean-Charles Mateo-Velez:
You may have defined a backtracking vol distrib in your global parameters
They do not allow spacecraft drift. Change for PIC.