make.selection.table: Create 'selection.table' class objects

Description

make.selection.table converts data frames into an object of class selection.table.

Usage

make.selection.table(X, max.dur = 10, path = NULL,...)

Arguments

data frame with the following columns: 1) "sound.files": name of the .wav files, 2) "sel": number of the selections, 3) "start": start time of selections, 4) "end": end time of selections. Columns for 'top.freq', 'bottom.freq' and 'channel' are optional. Alternatively, a 'selection.table' class object can be input to double check selections. The ouptut of manualoc or autodetec can be used as the input object for other warbleR functions.

max.dur

the maximum duration of expected for a selection (ie. end - start).

path

Character string containing the directory path where the sound files are located. If NULL (default) then the current working directory is used.

...

Additional arguments to be passed to checksels for customizing checking routine.

Value

An object of class selection.table which includes the original data.frame as well as the result of the checks as an additional attribute. This are used by downstream warbleR functions to improve efficiency and avoid errors due to missing or mislabeled data, or selection out of the ranges of the original sound files.

Details

This function creates and object of class 'selection.table'. The function checks 1) if the selections listed in the data frame correspond to .wav files in the working directory, 2) if the sound files can be read and if so, 3) if the start and end time of the selections are found within the duration of the sound files. Note that the sound files should be in the working directory (or the directory provided in 'path'). This is useful for avoiding errors in dowstream functions (e.g. specan, xcorr, catalog, dfDTW). Note that corrupt files can be fixed using fixwavs) ('sox' must be installed to be able to run this function). The 'selection.table' class can be input in subsequent functions.

Examples

Run this code

# NOT RUN {
{
# First set temporary folder
# setwd(tempdir())

data(list = c("Phae.long1", "Phae.long2", "Phae.long3", "Phae.long4", "selec.table"))
writeWave(Phae.long1,"Phae.long1.wav")
writeWave(Phae.long2,"Phae.long2.wav")
writeWave(Phae.long3,"Phae.long3.wav")
writeWave(Phae.long4,"Phae.long4.wav")

st <- make.selection.table(X = selec.table)

class(st)
}
# }