format_age: Format age in child language data
In hartmast/wizard: A Set of Convenience Functions for Everyday Programming

Description Usage Arguments Value

View source: R/format_age.R

Convenience function for formatting age values: In child language acquisition studies, age values ofte come in formats like 2;1.10 (year;month.day), which causes problems when sorting the data because they will typically be recognized as character strings, and 2;10.5 will precede 2;1.10 because of the 0 in the first character string. This function helps to circumvent this problem by adding trailing zeros to all one-digit month and day values. Its input can be either a vector or a dataframe. Its output is a vector of formatted numbers in the former case or a dataframe with an added column age_formatted in the latter case. Alternatively, if you use a dataframe as input, you can specify factors = TRUE, in which case the original formatting will be kept but the factor levels will be rearranged in such a way that the temporal order is accurately reflected.

1	format_age(x, col, month_separator = ";", day_separator = ".", factors = FALSE)

`x`	A vector or dataframe.
`col`	If x is a dataframe: The column containing the age values.
`month_separator`	sign that separates months from years. Defaults to ; as in 2;4.10
`day_separator`	sign that separates days from months. Defaults to . as in 2;4.10
`factors`	If TRUE, the original formatting will be retained but the factor levels will be rearranged to reflect the correct temporal order (if x is a vector). If x is a dataframe, the factor levels will be rearranged in the original column but an age_formatted column will still be appended to the original dataframe. To get rid of the column, use x[,!names(x)=="age_formatted"]. Default is FALSE.