dipper.data {mra} | R Documentation |
Example capture-recapture data from a study of European dippers.
data(dipper.data)
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
h2
h3
h4
h5
h6
h7
males
females
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.
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.]
data(dipper.data)