simDat72: Simulate data for Chapter 7.2: ANOVA with fixed effects of...

In ASMbook: Functions for the Book "Applied Statistical Modeling for Ecologists"

Simulate data for Chapter 7.2: ANOVA with fixed effects of population

Description

Simulate snout-vent length measurements of nSample smooth snakes in each of nPops populations Data are simulated under the assumptions of a model with fixed effects of populations

Usage

simDat72(nPops = 5, nSample = 10, pop.means = c(50, 40, 45, 55, 60), sigma = 5)

Arguments

nPops	Number of populations
nSample	Samples from each population
pop.means	Vector of mean length for each population
sigma	Value for the residual standard deviation

Value

A list of simulated data and parameters.

nPops	Number of populations
nSample	Number of samples per population
pop.means	Population means
sigma	Residual SD
pop	Indicator for population number
eps	Simulated residuals
y	Simulated lengths

Author(s)

Marc Kéry

Examples

str(dat <- simDat72())      # Implicit default arguments

# More pops, fewer snakes in each
str(dat <- simDat72(nPops = 10, nSample = 5, pop.means = runif(10,20,60)))

# Revert to "model-of-the-mean" (larger sample size to minimize sampling variability)
str(dat <- simDat72(nSample = 1000, pop.means = rep(50, 5), sigma = 5))

ASMbook documentation built on Sept. 11, 2024, 5:38 p.m.