This helper is intended to provide equivalent semantics to
select(). It is used for instance in scoped summarising and
mutating verbs (mutate_at() and summarise_at()).
vars(...)
| ... | Variables to include/exclude in mutate/summarise. You
can use same specifications as in These arguments are automatically quoted and later
evaluated in the context of the data
frame. They support unquoting. See
|
|---|
Note that verbs accepting a vars() specification also accept a
numeric vector of positions or a character vector of column names.
all_vars() and any_vars() for other quoting
functions that you can use with scoped verbs.