pomp (version 1.10)

ricker: Ricker model with Poisson observations.

Description

ricker is a pomp object encoding a stochastic Ricker model with Poisson measurement error.

Details

The state process is $N[t+1] = r N[t] exp(-N[t]+e[t])$, where the $e[t]$ are i.i.d. normal random deviates with zero mean and variance $sigma^2$. The observed variables $y[t]$ are distributed as $Poisson(phi N[t])$.

See Also

pomp, gompertz, and the tutorials on the package website.

Examples

pompExample(ricker)
plot(ricker)
coef(ricker)