read.telemetry: Import Telemetry Fixes

Description

A shortcut function for constructing a telemetry capthist object from a file of telemetry fixes. Telemetry data are generally similar in format to polygon data (see also addTelemetry).

Usage

read.telemetry(file = NULL, data = NULL, covnames = NULL, verify = TRUE, ...)

Value

An secr capthist object including attribute `telemetryxy' with the x-y coordinates, and a `traps' object with detector type = `telemetry'

Arguments

file: character name of text file
data: data.frame containing coordinate data (alternative to file)
covnames: character vector of names for individual covariates
verify: logical for whether to check input
...: other arguments passed to countfields, read.table etc.

Details

Input data may be in a text file (argument file) or a dataframe (argument data). Data should be in the XY format for function `read.capthist` i.e. the first 5 columns should be Session, ID, Occasion, X, Y. Further columns are treated as individual covariates.

No `traps' input is required. A traps object is generated automatically.

Examples

Run this code


if (FALSE) {

olddir <- setwd('D:/bears/alberta')
## peek at raw data
head(readLines('gps2008.txt'))
gps2008CH <- read.telemetry("gps2008.txt")
setwd(olddir)

plot( gps2008CH, gridsp = 10000)
head(gps2008CH)
secr.fit(gps2008CH, start = log(4000), detectfn = 'HHN', 
    details = list(telemetryscale = 1e12))

}