famnzp.Rout.save
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>
> library(aster)
>
> famnam <- families()
>
> ifam <- seq(along = famnam)[famnam == "non.zero.poisson"]
>
> print(ifam)
[1] 3
>
> mu <- seq(0.1, 3.0, 0.2)
> theta <- log(mu)
>
> zeroth <- double(length(theta))
> first <- double(length(theta))
> second <- double(length(theta))
>
> for (i in seq(along = theta)) {
+ zeroth[i] <- famfun(ifam, 0, theta[i])
+ first[i] <- famfun(ifam, 1, theta[i])
+ second[i] <- famfun(ifam, 2, theta[i])
+ }
>
> all.equal(zeroth, log(exp(mu) - 1))
[1] TRUE
> tau <- mu / (1 - exp(- mu))
> all.equal(first, tau)
[1] TRUE
> all.equal(second, tau * (1 - tau * exp(- mu)))
[1] TRUE
>
>