Donovan.7: Exercise 7 example data

In RMark: R Code for Mark Analysis

Exercise 7 example data

Description

An example occupancy data set used as exercise 7 in the occupancy website developed by Donovan and Hines.

Format

A data frame with 20 observations (sites) on the following 2 variables.

ch

a character vector containing the presence (1) and absence (0) for each of 5 visits to the site

freq

frequency of sites (always 1)

Details

This is a data set from exercise 7 of Donovan and Hines occupancy web site (https://blog.uvm.edu/tdonovan-vtcfwru/occupancy-estimation-and-modeling-ebook/).

Examples

# Donovan.7 can be created with
# Donovan.7=convert.inp("Donovan.7.inp")

do.exercise.7=function()
{
  data(Donovan.7)
# Estimates from following agree with estimates on website but the
# log-likelihood values do not agree.  Maybe a difference in whether the
# constant binomial coefficients are included.
  Donovan.7.poisson=mark(Donovan.7,model="OccupRNPoisson",invisible=FALSE,threads=1,delete=TRUE)
# THe following model was not in exercise 7.
  Donovan.7.negbin=mark(Donovan.7,model="OccupRNNegBin",invisible=FALSE,threads=1,delete=TRUE)
  return(collect.models())
}
exercise.7=do.exercise.7()
# Remove # to see output
# print(exercise.7)

RMark documentation built on Aug. 14, 2022, 1:05 a.m.