Internal. This function will tag pre-defined variables in a
data.frame by adding a label attribute to the column. This can be used for
one or multiple variables at the same time.
Arguments
- x
a data.frame or a tibble, with at least one column
- tags
A named list with variable names in x as list names and the
tags as list values. Values set to NULL remove the tag.
Value
The function returns the original object with an additional "label"
attribute on each provided variable.
Details
If used several times, the previous tag is removed silently.
Only accepts known variables from the provided data.frame.
