Recode state abbreviations

Source: R/prepare.R

This is a convenience function to help standardize odd-looking state abbreviations based on a reference list of allowed abbreviations.

recode_state(dat, state_table, oldvar = "state", newvar = "state_new")

Arguments

dat

data frame: input data with a state variable
state_table

data frame: input data holding valid abbreviations
oldvar

character: name of state variable
newvar

character: name of new state variable

See also

Other functions for standardizing state license data: recode_month, state_abbreviations

Examples

data(state_abbreviations)
dat <- data.frame(state = c("M0", "mo", "Mo", "MR", "YY"))
recode_state(dat, state_abbreviations)
#>   state state_new
#> 1    M0        MO
#> 2    mo        MO
#> 3    Mo        MO
#> 4    MR      <NA>
#> 5    YY      <NA>