read.telemetry {secr}

R Documentation

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, ...)

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.

Value

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

See Also

addTelemetry, read.capthist

Examples

## Not run: 

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))


## End(Not run)

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