Convert an alphabetical character object from A to Z into a corresponding integer
Source:R/as_numbered_labels.R
alpha_to_int.RdIntegers and NA values are passed as is. Double or characters with no corresponding Roman numeral are converting to NA values.
Usage
alpha_to_int(x, dict = LETTERS, n = 1, quiet = TRUE, call = parent.frame())Arguments
- x
Character vector of length n strings to compare to dict. Typically, letters from "A" to "Z". Case sensitive.
- dict
Character vector to match to x. Default: LETTERS.
- n
Maximum character length for non-NA objects permitted. Set to NULL or >1 if dict includes objects with more than one character.
- quiet
If
TRUE, suppress warnings for introduction of NA values through coercion.- call
Default:
parent.frame(). Passed to input checking functions to improve error messages.