Example of Poisson Mark-Resight model
Data and example illustrating Poisson Mark-Resight model with 2 groups and one occasion.
A data frame with 93 observations on the following 2 variables.
a character vector
a factor
with levels group1 group2
# This example is excluded from testing to reduce package check time
data(Poisson_twoMR)
pois.proc=process.data(Poisson_twoMR,model="PoissonMR",groups="pg",
counts=list("Unmarked Seen"=matrix(c(1237,588),nrow=2,ncol=1),
"Marked Unidentified"=matrix(c(10,5),nrow=2,ncol=1),
"Known Marks"=matrix(c(60,0),nrow=2,ncol=1)))
pois.ddl=make.design.data(pois.proc)
mod=mark(pois.proc,pois.ddl,
model.parameters=list(alpha=list(formula=~1),
U=list(formula=~-1+group),
sigma=list(formula=~1,fixed=0)),
initial=c(0.9741405 ,0.0000000 ,6., 5.),threads=2)
summary(mod)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.