This function will plot f1/f2 data. The function takes 4 obligatory arguments and optionally one can include a grouping variable ('group'). This function is a wrapper for ggplot. Columns from the data frame must be wrapped in quotation marks.
vowel_plot(data, vowel, f1, f2, group = NULL, print = FALSE)
# Vowel plot without grouping variable
library("untidydata")
data("spanish_vowels")
#vowel_plot(data = spanish_vowels, vowel = 'vowel', f1 = 'f1', f2 = 'f2',
# group = NULL)
# Vowel plot with grouping variable
# vowel_plot(data = spanish_vowels, vowel = 'vowel', f1 = 'f1', f2 = 'f2',
# group = 'gender')