Here are several ways to find the last character in a string:
> x <- "abc"
> substring(x, nchar(x))
[1] "c"
> sub(".*(.)", "\\1", x)
[1] "c"
> library(gsubfn)
> strapply(x, ".$")[[1]]
[1] "c"
On Mon, Oct 19, 2009 at 3:52 PM, Jason Rupert wrote:
> I am currently being defeated by grep. I am a
stLetter <- substr(yourstring, n, n)
Bert Gunter
Genentech Nonclinical Biostatistics
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Jason Rupert
Sent: Monday, October 19, 2009 12:52 PM
To: R-help@r-project.org
Subject: [R] Us
I am currently being defeated by grep. I am attempting to determine the value
of the last letter of a character string.
An example of my data set is shown below. Regarding the codes, I would like to
identify the value of the last character and then take the appropriate action,
e.g.
If the
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