Susceptible-Infected-Susceptible Model

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 paramter 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 
#>