Try this: sapply(apply(sapply(temp, charToRaw), 2, unique), length) == 1
On Tue, Apr 26, 2011 at 3:09 PM, Lisa <lisa...@gmail.com> wrote: > Dear all, > > I just want to determine if the characters in a character string are the > same or not. For example, > > temp <- c("aa", "aA", "ab") > > How do I determine the first one have the two same “a”, and the second and > third have the different characters? Thanks in advance. > > Lisa > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Tell-the-difference-between-characters-tp3476130p3476130.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.