Simulate Camera Trap Capture-Recapture and Presence-Absence Occupancy Data
The 'simtrapoccR' package allows you to generate capture-recapture history matrices and presence-absence history matrices for feeding into population estimation statistical models.
For information about how the data is generated, see here.
You can install the development version of simtrapoccR from GitHub with:
# install.packages("devtools")
devtools::install_github("jackthomas818/simtrapoccR")# number of sites
nsites <- 4**2
# number of individuals in capture history
n <- 10
# number of sampling occasions in capture-recapture
nsample_cap <- 5
# number of sampling occasions in presence-absence
nsample_pa <- 7
# amount of movement for the species
tau <- 0.25
# number of camera traps
ntraps <- 3
# species capture probability
p <- 0.6
# marker deposition rate
sigma <- 1
# time between sampling occasions (presence-absence)
delta <- 2
# homeranges for the n individuals
homeranges <- create_homeranges(n)
capture_hist <- generate_capture_hist(ntraps, nsample_cap, tau, p, homeranges)
presence_absence <- generate_presence_absence(nsites, nsample_pa, tau, sigma, delta, homeranges)