A keylist element is a long key for one new variable. The new variables are named by "name_old.name_new" for uniqueness.
makeKeylist(
key,
sep = c(character = "\\|", logical = "\\|", integer = "\\|", factor = "\\|",
ordered = "[\\|
A list with one element per variable name, along with some attributes like class_old and class_new. The class is set as well, "keylist"
A key object or a file name, csv, xlsx or rds.
Separator regular expressions
Strings that will be treated as NA. This will be used only if the key object does not have an na.strings attribute.
Paul Johnson <pauljohn@ku.edu>
If the key has one old variable being recoded 6 ways, that begets 6 elements in the resulting list. Attributes including the classes of the old and new variables are included.