Bogdan,
Follow my suggestion.
letter <- substring(A, 1, 1)
number <- substring(A, 2, nchar(A))
new.data <- paste0(letter, formatC(as.numeric(number), width = 2, flag =
"0"))
Em 20/06/2015 21:21, "Bogdan Tanasa" <tan...@gmail.com> escreveu:
> Dear all,
>
> I am looking for a suggestion please regarding sorting a dataframe with
> alphanumerical components :
>
> let's assume we have :
>
> A = c("A1","A10","A11","A2")
> B = c(1,2,3,4)
>
> C = data.frame(A,B)
>
> how could I sort C data.frame in such a way that we have at the end :
>
> C$A in the order : "A1", "A2", "A10", "A11". thank you very much,
>
> -- bogdan
>
> [[alternative HTML version deleted]]
>
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