Hi > > Dear all, > I have a string and I want to search for its existance inside a data.frame > (or in a column of the data.frame). > > One way is for me to do this manually: Make a for loop for the number of
> elements and compare one by one element. Is there though any more improved > way to do that? Rather vague question. What kind of string? Shall it be matched fully? sapply(your.data.frame, match, "your.string", nomatch=0) gives you a result 1 where it matches the string and 0 where not. Regards Petr > > B.R > Alex > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.