chapman: Chapman Robson catch curve survival estimator

In scrogster/CatchCurve: R functions for estimating survival rates from age-structure samples

Description

Computes the Chapman-Robson survival estimator and it's standard error from age structure data

Usage

chapman(ages)

Arguments

ages	a vector of individual ages, coded such that the first fully-recruited age class is zero.

Value

list with elements S_hat and SE(S_hat)

Author(s)

Michael Scroggie

References

Chapman, D.G. and Robson, DS (1960) The analysis of a catch curve. Biometrics 16:354-368.

Examples

data(geocrinia)
chapman(geocrinia$age)
randata<-rgeom(1000, 1-0.3)
chapman(randata)

scrogster/CatchCurve documentation built on May 29, 2019, 4:08 p.m.