rescale_yes_no_4: Rescale level yes-no four levels
In antaldaniel/surveyreader: Data cleaning and integration for survey files

This is a wrapper function around the rescale_categories function.

rescale_yes_no_4(column, from = c("Yes, definitely", "Yes, to some extent",
  "No, not really", "No, definitely not"), to = c(2, 1, -1, -2),
  na_labels = c("DK"), underscore = TRUE, exact_from = TRUE,
  return_class = "numeric")

`column`	A column from a survey data with a four-level agreement scale.
`from`	Defaults to `c("Yes, definitely", "Yes, to some extent", "No, not really", "No, definitely not")`.
`to`	Defaults to `c(2,1,-1,2)` ) If `return_class = "character"` or `return_class = "factor"` is selected it returns the abbreviated category names `c("definitely", "maybe", "maybe_not", "definitely_not")`.
`na_labels`	Defaults to `c("DK")`.
`underscore`	Defaults to `TRUE` in which case factor names or character strings contain underscore_between_words. This is a better approach for further programming, but you can choose `FALSE` for nicer printing results. See examples.
`exact_from`	Deafults to `TRUE`. If `FALSE` you can use the partial matching, but beware that in this case, `"twenty"` will be replaced by
`return_class`	Default is `"numeric"`, alternatives `"character"` or `"factor"`.

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rescale_yes_no_4  (c("Yes, definitely", "Yes, to some extent",
                        "No, not really", "No, definitely not", "Missing"),
                      na_labels = "Missing")