How do I access a position in a character array?

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The following code returns me a vector of 12 letters:

res <- "ACDEDEAEDCED"
res <- strsplit(res,"", FALSE)
View(res[4])

Error in . subset2(x, i, Exact = Exact) : out-of-bounded index

More when I try to access a specific position and gives error. I have tried many ways. Among them: res[1,4] and res[,4]...

r

1 answer

3

The function strsplit returns a list, so the vector res is a list, see:

res <- "ACDEDEAEDCED"
res <- strsplit(res,"", FALSE)
res
[[1]]
 [1] "A" "C" "D" "E" "D" "E" "A" "E" "D" "C" "E" "D"

If you want element 4 of the first element of the list, you can take it as follows:

res[[1]][4]
[1] "E"

  • One can use unlist(strsplit(res,"", FALSE)) or strsplit(res,"", FALSE)[[1]] for the final result to be a vector, with the first grouping all the results of the strsplit and the second holds only the first.

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