Yes, but it need some help, since nchar gives the length of the *entire* string; e.g.
## to count "a" 's : > x <-(c("abbababba","bbabbabbaaaba")) > nchar(gsub("[^a]","",x)) [1] 4 6 This is one of about 8 zillion ways to do this in base R if you don't want to use a specialized package. Just for curiosity: Can anyone comment on what is the most efficient way to do this using base R pattern matching? Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Mon, Nov 14, 2016 at 5:52 AM, Brijesh Mishra <brijeshkmis...@gmail.com> wrote: > ?nchar in the base R should also help... > > On Mon, Nov 14, 2016 at 2:26 PM, Ismail SEZEN <sezenism...@gmail.com> wrote: > >> >> > On 14 Nov 2016, at 11:44, Ferri Leberl <ferri.leb...@gmx.at> wrote: >> > >> > >> > Dear All, >> > Is there a function to count the occurences of a certain character in a >> string resp. in a vector of strings? >> > Thank you in advance! >> > Yours, Ferri >> > >> >> library(stringr) >> ?str_count >> >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> 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. >> > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.