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Apply haven value labels to a vector
apply_labs_haven(x, labels, ptype, ...)haven_labelled vector
a vector to label
a named vector of labels in the format c(value = label)
vector to serve as prototype for label values
unused, needed to ignore extra arguments that may be passed
Assumes a check_installed() has been run for labelled. Since haven preserves the
underlying data values we need to make sure the data type of the value options in the metadata matches
the data type of the values in the actual data. This function accepts a prototype, usually a column
from db_data, and uses force_cast() to do a best-effort casting of the value options in the metadata
to the same data type as ptype. The fallback is to convert x and the value labels to character.