Susceptible-Infected-Susceptible Model

SIS_ode(t, x, params)

Arguments

t

The timestep overwhich to calculate derivatives

x

A numeric vector of compartment populations.

params

A named vector of parameter values.

Value

A vector of derivatives

Examples

##Model Input S_0 <- 999 I_0 <- 1 beta <- 3 chi <- 2 parameters <- c(beta = beta, chi = chi) inits <- c(S = S_0, I = I_0) SIS_ode(1, inits, parameters)
#> [[1]] #> S S #> -0.997 0.997 #>