[R] testing whether two character vectors contain (the same) items in the same order

Robert Baer rbaer at atsu.edu
Sat Aug 8 19:50:43 CEST 2015



On 8/6/2015 5:25 AM, Federico Calboli wrote:
> Hi All,
>
> let’s assume I have a vector of letters drawn only once from the alphabet:
>
> x = sample(letters, 15, replace = F)
> x
>   [1] "z" "t" "g" "l" "u" "d" "w" "x" "a" "q" "k" "j" "f" "n" “v"
>
> y = x[c(1:7,9:8, 10:12, 14, 15, 13)]
>
> I would now like to test how good a match y is for x.  Obviously I can transform the letters in numbers and use a rank test, but I was left wondering whether this is the only solution and whether there are more appropriate solutions that are already implemented in R (I am not going to reinvent the wheel if I can avoid it).
>
> BW
>
> F
Perhaps
install.packages("stringdist")
help(package = 'stringdist')





>
> --
> Federico Calboli
> Ecological Genetics Research Unit
> Department of Biosciences
> PO Box 65 (Biocenter 3, Viikinkaari 1)
> FIN-00014 University of Helsinki
> Finland
>
> federico.calboli at helsinki.fi
>
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