The reason you get "" is, as stated on the previous response and on
the documentation of substr function, the function "When extracting,
if start is larger than the string length then "" is returned.". This
is what happens on your function.
HTH
EK
On Sun, Jan 21, 2018 at 3:59 AM, Luigi Marongiu
<marongiu.lu...@gmail.com> wrote:
> Dear all,
> I have a string, let's say "testing", and I would like to extract in
> sequence each letter (character) from it. But when I use substr() I only
> properly get the first character, the rest is empty (""). What am I getting
> wrong?
> For example, I have this code:
>
>>>>
> x <- "testing"
> k <- nchar(x)
> for (i in 1:k) {
> y <- substr(x, i, 1)
> print(y)
> }
>
> [[alternative HTML version deleted]]
>
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