Look up FIPS codes by state abbreviations (including District of Columbia and
Puerto Rico); this function is based on
grep(), and hence allows for
abbr_to_fips( abbr, ignore.case = TRUE, perl = FALSE, fixed = FALSE, ties_method = c("first", "all") )
Vector of state abbreviations to look up.
Arguments to pass to
If "first", then only the first match for each name is returned. If "all", then all matches for each name are returned.
A vector of FIPS codes if
ties_method equals "first", and a list of
FIPS codes otherwise. These FIPS codes have five digits (ending in "000").
abbr_to_fips("PA") abbr_to_fips(c("PA", "PR", "DC")) # Note that name_to_fips() works for state names too: name_to_fips("^Pennsylvania$")
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