On Mon, May 21, 2012 at 7:33 AM, carol white <[email protected]> wrote: > like searching m or [m,n] in [1,n,m,e,m,n,n,u]. > > I want the exact match of all occurrences of m and n in the last vector. > Therefore, grep is not helpful as it will extract if there are also mm and > mmm.
I am pretty sure grep() is helpful if you are using the appropriate regular expression to search for. Like Ista, I am not sure exactly what your search criteria are. The easiest I think would be to give us some examples. Say give three vectors and what the desired output from your search is. Josh > > Cheers, > > Carol > > > ________________________________ > From: Ista Zahn <[email protected]> > > Cc: "[email protected]" <[email protected]> > Sent: Monday, May 21, 2012 3:38 PM > Subject: Re: [R] all occurences of an element in a vector > > Hi Carol, > > I'm not sure what a "sub-vector in a vector" is, but I think you might > be looking for ?grep > > Best, > Ista > > >> Hi, >> How do you identify all occurences of an element or a sub-vector in a vector >> as opposed to match, %in%, and intersect which find the first occurrence of >> an element? >> >> Cheers, >> >> Carol >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> [email protected] 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. > [[alternative HTML version deleted]] > > > ______________________________________________ > [email protected] 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. > -- Joshua Wiley Ph.D. Student, Health Psychology Programmer Analyst II, Statistical Consulting Group University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ [email protected] 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.
