Takes labels from the Derived Variables excel file and applies them to the
passed data frame.
The excel sheet must have columns "varname" and "label".
set_derived_variables(data, path, sheet = NULL, drop = TRUE)Data frame
Path to Derived Variables xls/xlsx file
Sheet to read. Either a string (the name of a sheet), or an
integer (the position of the sheet). Ignored if the sheet is specified via
range. If neither argument specifies the sheet, defaults to the first
sheet.
Logical indicating whether to drop unlabelled variables
if (FALSE) {
trial %>%
  set_derived_variables("derived_variables_sjoberg.xlsx")
}