i am using mac OSX 10.7.5, running R version 2.15.2 (2012-10-26) -- "Trick or Treat" when i do: uncountry <- unique(wvsAB[,7]) wvsAB$numcountry <- match(wvsAB$country, uncountry) "unstate" isn't attaching.
library(base) uncountry <- unique(wvsAB[,7]) wvsAB$numcountry <- match(wvsAB$country, uncountry) ls(wvsAB)
[1] "age" "country" "cpi" "dem" "diversity" "educ" "gender" "income" [9] "net" "numcountry" "trust" thanks in advance for any help.