COA: Short-term Centers of Activity

In vinayudyawer/ATT: The Animal Tracking Toolbox: an extention to the VTrack package

Description

Function to calculate Short-term centers of activity positions from passive telemetry data. Based on technique described in: Simpfendorfer, C. A., M. R. Heupel, and R. E. Hueter. 2002. Estimation of short-term centers of activity from an array of omnidirectional hydrophones and its use in studying animal movements. Canadian Journal of Fisheries and Aquatic Sciences 59:23-32.

Usage

COA(ATTdata, timestep = 60, split = FALSE)

Arguments

ATTdata	an 'ATT' object created using setupData containing tag detection data, metadata and station information
timestep	an integer containing the temporal bin size of center of activity calculations (in minutes), default 60 min
split	a conditional argument to split COA estimates by Tag.ID. Default is FALSE, which produces a single tibble with COAs from all individuals compiled. If TRUE, a list of tibbles produced with each Tag.ID seperated.

Value

Exports a 'COA' object that is a tibble (if split = FALSE) or a list of tibbles (if split = TRUE)

See Also

Input data needs to be setup using setupData. 'COA' object required for HRSummary

Examples

## Import example datasets
data(IMOSdata)
data(taginfo)
data(statinfo)

## Setup data
ATTdata<- setupData(Tag.Detections = IMOSdata, Tag.Metadata = taginfo, Station.Information = statinfo, source="IMOS")

## Estimate Short-term Center of Activities for all individuals
COAdata<- COA(ATTdata)

vinayudyawer/ATT documentation built on Oct. 8, 2020, 3:48 p.m.