README.md

In stevencarlislewalker/cleanPostalCodes: Utility for cleaning postal codes

Clean postal codes

Example use

cds <- c("A1B 2C3", "missing",
         "---  A    5G*****HHH5J4",
         "E9J6H2nnnn", "e6n8l0")
cleanPostalCodes(cds)
[1] "A1B 2C3" NA        "A5G 5J4" "E9J 6H2" "E6N 8L0"

Algorithm

1. Coerce input to a character vector.
2. Change all lower case letters to upper case.
3. Remove everything that isn't a digit or letter.
4. Find the first instance of letter-number-letter.
5. In the remaining characters, find the first instance of number-letter-number.
6. If these two patterns can be found, return them, otherwise return NA.

Acknowledgements

Ben for help with regular expressions.

stevencarlislewalker/cleanPostalCodes documentation built on May 30, 2019, 4:42 p.m.