Conversion of a Vector to a Factor — as_factor_keep

Converts x to a factor and keeps its attributes. Warns appropriately such that the user can decide whether they prefer converting to factor manually (e.g. for full control of factor levels).

Usage

as_factor_keep_attributes(
  x,
  x_name = deparse(substitute(x)),
  na_level = "<Missing>",
  verbose = TRUE
)

Arguments

x: (atomic)
object to convert.
x_name: (string)
name of x.
na_level: (string)
the explicit missing level which should be used when converting a character vector.
verbose: defaults to TRUE. It prints out warnings and messages.

Value

A factor with same attributes (except class) as x. Does not modify x if already a factor.