Why would you strsplit them? I would think length(grep("google", unlist(x), ignore.case = TRUE))
should do it. Best, Ista On Thu, Jul 16, 2015 at 1:40 PM, tryingtolearn <inshi...@ymail.com> wrote: > Say I have a list: > [[1]] "I like google" > [[2]] "Hi Google google" > [[3]] "what's up" > > and they are tweets. And I want to find out how many tweets mention google > (the answer should be 2). > If I string split and unlist them, then I would get the answer of 3. How do > I make sure I get just 2? > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/matching-strings-in-a-list-tp4709967.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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.