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ASMbook (version 1.0.2)

simDat15: Simulate data for Chapter 15: Comparing two groups of binomial counts

Description

Generate presence/absence data for two gentian species (Bernoulli variant)

Usage

simDat15(N = 50, theta.cr = 12/50, theta.ch = 38/50)

Value

A list of simulated data and parameters.

N

Number of sites

theta.cr

Probability for cross-leaved gentian

theta.ch

Probability for chiltern gentian

y

Simulated presence/absence data

species.long

Species indicator (longform), 1 = chiltern

C

Aggregated presence/absence data

species

Species indicator for aggregated data

chiltern

Effect of chiltern (difference in species intercepts)

Arguments

N

Number of sites

theta.cr

Probability of presence for cross-leaved gentian

theta.ch

Probability of presence for chiltern gentian

Author

Marc Kéry

Examples

Run this code
str(dat <- simDat15())      # Implicit default arguments

# Revert to "Binomial model-of-the-mean"
# (Increase sample size to reduce sampling variability)
str(dat <- simDat15(N = 100, theta.cr = 40/100, theta.ch = 40/100))

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