These routines provides access to variable history at lagged times.
The lagged time \(t\) must not be less than \(t_0\), 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)Vector of variable history at time t.
numeric -- time t at which history is accessed
Alex Couture-Beil -- Software Engineer, Earthly Technologies, Victoria BC
Maintainer: Rowan Haigh, Program Head -- Offshore Rockfish
Pacific Biological Station (PBS), Fisheries & Oceans Canada (DFO), Nanaimo BC
locus opus: remote office, Vancouver BC
Last modified Rd: 2025-06-13
In package PBSddesolve:
dde