summaryPop {IPMbook}

Calculates summary statistics from a subset of a population

Description

Calculates summary statistics from a subset of a population; used if a count survey is to be simulated with a subset of the complete population.

Usage

summaryPop(state, subset)

Arguments

state

individuals x years matrix for the population with ages of adult individuals plus newborns (coded 0) and died (-1), usually the output from simPop.

subset

vector with the indices of the individuals that are to be included for the summary statistics; if missing, all individuals are included.

Value

A matrix with the numbers in each adult age class for each year, total adults, and number of female juveniles.

Author(s)

Michael Schaub

Examples

pop <- simPop()
summaryPop(pop$state) # default is to include all, compare with
pop$N

# define a subset of 80 drawn at random
sset <- sample(nrow(pop$state), 80)
summaryPop(pop$state, subset=sset)