On 21/01/18 21:59, Luigi Marongiu 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?
What you're getting wrong is failing the read the help for substr().
The third argument is "stop", not the length of the substring.
For example, I have this code:
x <- "testing"
k <- nchar(x)
for (i in 1:k) {
y <- substr(x, i, 1)
print(y)
}
You want y <- substr(x,i,i).
cheers,
Rolf Turner
--
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
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