Join US state abbreviations to a data frame

key_state(x)

Arguments

x	object with an unabbreviated state column

Examples

key_state(data.frame(state.name = datasets::state.name, stringsAsFactors = FALSE))
#>        state.name state.abb
#> 1         Alabama        AL
#> 2          Alaska        AK
#> 3         Arizona        AZ
#> 4        Arkansas        AR
#> 5      California        CA
#> 6        Colorado        CO
#> 7     Connecticut        CT
#> 8        Delaware        DE
#> 9         Florida        FL
#> 10        Georgia        GA
#> 11         Hawaii        HI
#> 12          Idaho        ID
#> 13       Illinois        IL
#> 14        Indiana        IN
#> 15           Iowa        IA
#> 16         Kansas        KS
#> 17       Kentucky        KY
#> 18      Louisiana        LA
#> 19          Maine        ME
#> 20       Maryland        MD
#> 21  Massachusetts        MA
#> 22       Michigan        MI
#> 23      Minnesota        MN
#> 24    Mississippi        MS
#> 25       Missouri        MO
#> 26        Montana        MT
#> 27       Nebraska        NE
#> 28         Nevada        NV
#> 29  New Hampshire        NH
#> 30     New Jersey        NJ
#> 31     New Mexico        NM
#> 32       New York        NY
#> 33 North Carolina        NC
#> 34   North Dakota        ND
#> 35           Ohio        OH
#> 36       Oklahoma        OK
#> 37         Oregon        OR
#> 38   Pennsylvania        PA
#> 39   Rhode Island        RI
#> 40 South Carolina        SC
#> 41   South Dakota        SD
#> 42      Tennessee        TN
#> 43          Texas        TX
#> 44           Utah        UT
#> 45        Vermont        VT
#> 46       Virginia        VA
#> 47     Washington        WA
#> 48  West Virginia        WV
#> 49      Wisconsin        WI
#> 50        Wyoming        WY