Learn R Programming

⚠️There's a newer version (1.3-2) of this package.Take me there.

popdemo (version 0.1-4)

Provides Tools For Demographic Modelling Using Projection Matrices

Description

popdemo provides a set of tools designed for modelling population demography using population projection matrix (PPM) models. The focus is mainly on indices of transient dynamics, and the use of control theory (specifically transfer functions). However, popdemo includes a number of tools focussing on other areas of demographic modelling. Some tools may prove useful to anyone working with projection matrix models of any type, or indeed matrices in general. The package is designed to build on those tools already available in popbio.

Copy Link

Version

Install

install.packages('popdemo')

Monthly Downloads

517

Version

0.1-4

License

GPL (>= 2)

Maintainer

Iain Stott

Last Published

June 10th, 2014

Functions in popdemo (0.1-4)

Keyfitz.delta

Calculate Keyfitz's delta
inertia.tfa

Analyse transfer function of population inertia
inertia.tfsens

Calculate sensitivity of inertia using transfer functions
dr

Calculate damping ratio
tf

Calculate transfer function
convergence.time

Calculate time to convergence
firststepatt

Calculate first-timestep attenuation
tfa

Analyse transfer function
maxamp

Calculate maximal amplification
is.matrix_irreducible

Determine reducibility of a matrix
reactivity

Calculate reactivity
truelambda

Calculate simulated asymptotic growth
minCS

Calculate the mininum column sum of a matrix
inertia.tfamatrix

Analyse transfer function of inertia
is.matrix_ergodic

Determine ergodicity of a matrix
popdemo-package

Provides tools for demographic modelling using projection matrices
projection.distance

Calculate projection distance
is.matrix_primitive

Determine primitivity of a matrix
Tort

Desert tortoise matrix
Kreiss

Calculate Kreiss bounds
elas

Calculate elasticity matrix
Cohen.cumulative

Calculate Cohen's cumulative distance
tfamatrix

Analyse transfer function
maxatt

Calculate maximal attenuation
blockmatrix

Block-permute a reducible matrix
inertia

Calculate population inertia
tfsens

Calculate sensitivity using transfer functions
sens

Calculate sensitivity matrix
Matlab2R

Read Matlab style matrices into R
S3 plot method for matrices of transfer functions

Plot matrices of transfer functions
S3 plot method for transfer functions

Plot transfer function
project

Project population dynamics
S3 plot method for projections

Plot population dynamics
R2Matlab

Convert matrices into Matlab style strings