dipper.data {mra}

European Dipper data

Description

Example capture-recapture data from a study of European dippers.

Usage

data(dipper.data)

Format

A data frame containing 294 capture histories and the sex designation of birds captured. Capture indicators are either 0 = not captured, 1 = captured, or 2 = captured but died and not released back into the population. Columns in the data frame are:

h1

a numeric vector indicating capture at occasion 1

h2

a numeric vector indicating capture at occasion 2

h3

a numeric vector indicating capture at occasion 3

h4

a numeric vector indicating capture at occasion 4

h5

a numeric vector indicating capture at occasion 5

h6

a numeric vector indicating capture at occasion 6

h7

a numeric vector indicating capture at occasion 7

males

a numeric vector indicating males. 1 = males, 0 = females

females

a numeric vector indicating females. 0 = males, 1 = females

Details

This is a popular capture-recapture example data set. It has been analyzed by Lebreton et al. (1992) Amstrup et al. (2005) and others.

dipper.males is a vector indicating male birds. I.e., dipper.males <- dipper.data\$males

dipper.histories is a matrix of just the capture history columns h1 - h7, extracted from dipper.data and made into a matrix. This matrix can be fed directly into one of the estimation routines, such as F.cjs.estim.

To access: After loading the MRA library (with library(mra)) you must execute data(dipper.data), data(dipper.data), or data(dipper.males) to get access to these data frames. They are not attached when the library is loaded.

Source

Amstrup, S. C., McDonald, T. L., and Manly, B. F. J. 2005. Handbook of Capture-Recapture Analysis. Princeton University Press. [Chapter 9 has several examples that use this data.]

Examples

data(dipper.data)