Deterministic SIRD drift vector

Right-hand side of the normalised SIRD ODE system \(\dot s = -\lambda s i\), \(\dot i = \lambda s i - (\gamma+\alpha) i\), \(\dot r = \gamma i\).

Usage

sird_drift(state, parms)

Arguments

state

Numeric vector c(s, i, r).

parms

Named numeric vector/list with elements lambda, gamma, alpha.

Value

Numeric vector of length 3, b(x).