| createAge {IPMbook} | R Documentation |
Creates an age matrix
Description
Creates an animals x intervals matrix which gives the age class for each individual at the beginning of each interval, based on the occasion of first capture and the age at first capture.
Usage
createAge(f, age, nyears, mAge=2)
Arguments
f |
a vector of first capture occasions. |
age |
a corresponding vector with the age at first capture of each animal. |
nyears |
the number of years of the study; the number of intervals is |
mAge |
the maximum age class; age is incremented by 1 each year up to |
Value
An individuals x intervals matrix with the age of each individual at the beginning of each interval. Cells prior to the first capture are filled with NAs.
Author(s)
Michael Schaub
References
Schaub, M., Kéry, M. (2022) Integrated Population Models, Adademic Press, section 4.5.1.1.
Examples
data(woodchat5)
f <- getFirst(woodchat5$ch)
# Remove animals first captured on the last occasion
last <- which(f==ncol(woodchat5$ch))
f <- f[-last]
age <- woodchat5$age[-last]
x <- createAge(f, age, 20, 2)
head(x)
x[115:120,]
tail(x)
[Package IPMbook version 0.1.5 Index]