eFrameREST: eFrameREST

In dslramsey/eradicate: Functions to support the "eradication tools" shiny app

eFrameREST

Description

eFrameREST creates an eFrame data object for use with the REST model applied to camera trap data using the MLE given in: Nakashima,Y., Fukasawa, K., and Samejima H. (2018). J.App.Ecol,55,735-744.

Usage

eFrameREST(y, stay, cens, area, active_hours, siteCovs = NULL)

Arguments

y	An MxJ matrix of the observed number of encounters at a camera over a specified period (usually 24h but could be less - see active_hours) where M is the number of sites and J is the maximum number of observations per site.
stay	A vector of the observed staying times, which are the difference between the exit and entry times for all (or a sample) of individuals
cens	A vector indicating whether both entry and exit times were observed for each of the staying times (cens=1) or only the entry time was observed with the exit time unknown (cens=0). In the latter case, the staying time is the maximum time that the individual was observed to be in front of the camera.
area	A scalar indicating The area of the camera viewshed in square meters. This area is assumed to have a detection probability of 1.0 (effective sampling area).
active_hours	A scalar indicating the number of hours in each 24 hour period that the species is active
siteCovs	A data.frame of covariates that vary at the site level. This should have M rows and one column per covariate

Value

a eFrameREST holding data containing the response and covariates required for the REST model

Examples

counts<- rest$y
stay<- rest$stay
cens<- rest$cens
A<- rest$area # in km2
active<- rest$active_hours

emf<- eFrameREST(counts, stay, cens, A, active, siteCovs = site.data)
summary(emf)

dslramsey/eradicate documentation built on March 16, 2024, 1:40 p.m.