generation_time: Generation time

In chrissy3815/exactLTRE: An Exact Method for Life Table Response Experiment (LTRE) Analysis

Generation time

Description

Generation time has been defined in multiple ways. This calculation comes from Bienvenu and Legendre (2015, The American Naturalist; \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1086/681104")}). They define the generation time as the average time between two events in the genealogy of the population.

Usage

generation_time(Amat, Fmat)

Arguments

Amat	The full population projection matrix
Fmat	The fertility elements of the population projection matrix.

Value

The generation time, as a single number, given in the same units as the projection time step. If the projection interval is two weeks, the generation time will be the number of two-week intervals. You may wish to convert to a standard time step, like days or years.

Examples

A1<- matrix(data=c(0,0.8,0, 0,0,0.7, 5,0,0.2), nrow=3, ncol=3)
F1<- matrix(0, nrow=3, ncol=3)
F1[1,3]<- A1[1,3]
#F1 is all zeros, except the upper right corner which matches A1 for adult fertility
T<- generation_time(A1, F1)

chrissy3815/exactLTRE documentation built on July 1, 2023, 8:30 a.m.