Check variables in a data frame are valid character or factor.

Usage

assert_valid_variable(
  df,
  vars,
  label = deparse(substitute(df)),
  types = NULL,
  ...
)

Arguments

df

(data.frame) input dataset.

vars

(character) variables to check.

label

(string) labels of the data frame.

types

Named (list) of type of the input.

...

further arguments for assert_valid_var. Please note that different methods have different arguments so if provided make sure the variables to check is of the same class.

Value

invisible TRUE or an error message if the criteria are not fulfilled.