pastvalue {PBSddesolve} | R Documentation |
These routines provides access to variable history at lagged times.
The lagged time t must not be less than t0, nor should
it be greater than the current time of gradient calculation. The routine
cannot be directly called by a user, and will only work during the
integration process as triggered by the dde
routine.
pastvalue(t) pastgradient(t)
t |
access history at time t . |
vector of variable history at time t
.