Displaying 2 results from an estimated 2 matches for "resighted".
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2009 Oct 13
5
Introduction to mark-recapture analysis in R?
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MicrosoftInternetExplorer4
Dear R-helpers,
I was wondering whether there are any good books and/or website
links that introduce mark-recapture analysis in R. In
2003 Oct 01
1
hypergeometric & population estimates
...es the population estimates using maximum likelihood and 95%CL as
-2LogLikelihoods. Below, I determined the population estimate using
dhyper(x,m,n,k) and maximizing the density value as a function of n, but do
not know how I should calculate MLE with this distribution.
x <- 8 # number resighted caribou (white balls drawn)
m <-11 # number collared caribou (white balls total)
k <- 70 # number caribou seen (# balls drawn)
n <- 1:500 # ?? unknown number of uncollared caribou (# black balls)
d <- unlist(lapply(n, function(i) dhyper(x,m,i,k))) # density est...