add_selections: add_selections function
In deponent-verb/birdsong.tools: What the Package Does in One 'Title Case' Line

Description Usage Arguments Value Examples

Takes a unit table a adds a new column called "sel", indicating the number of the selected note in each song. (The k^th note would have sel k). Input unit table must have 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

1	add_selections(unit_table)

unit_table:

A data.frame with the columns specified in the description.

A new unit table with a sel column.

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unit_table = tibble::tibble(sound.files = c( rep("JS001.wav",3), rep("JS002.wav",3)),
start = seq(from = 1, to = 3.5, by = 0.5),
end = seq(from = 1, to = 3.5, by = 0.5) + 0.5)