I want to calculate MSD, ISF etc dynamical properties.
But I am confused about how to dump trajectory:
If I dump trajectory in a log frequency, using variable “logfreq” or a file containg dump timesteps, in this case, I can only select one snap as time origin. I am not sure if one time origin is sufficient?
And it would be better if anyone could tell me other ways which could choose many snaps as time origins, except for the way with equal interval between snaps.