Re: [R] Estimate the average abundance using Poisson regression with a log link.

2012-01-14 Thread Rui Barradas
There is a no homework rule, but: 1. "abundance" + "poisson" seems to be an animal species abundance problem in a capture-recapture framework. 2. If so, check out packages 'Rcapture' and 'SPECIES'. They both implement several estimators, such as Burnham and Overton's jacknife or Chao's estimators.

Re: [R] Estimate the average abundance using Poisson regression with a log link.

2012-01-14 Thread Rui Barradas
P.S. I don't understand what you mean by "log link" but if it's the use of a log-normal to get improved confidence intervals, package 'SPECIES' implements it, unlike 'Rcapture' that only gives point estimates. Rui Barradas -- View this message in context: http://r.789695.n4.nabble.com/Estima

[R] Estimate the average abundance using Poisson regression with a log link.

2012-01-14 Thread frankthetank
Hello, please excuse the simplicity of this question as I am not very good with stats. I am taking a class, using R which I am learning at the same time, and the questions asks us to "Estimate the average abundance using Poisson regression with a log link". I can estimate the abundance from "x", bu