Try this: !list %in% c("aa", "bb")
On Fri, Jan 14, 2011 at 10:19 AM, A M Lavezzi <lave...@unipa.it> wrote: > Hi everybody, > > I have the following problem. I have a vector containing character > elements, > such as: > > list = c("aa","bb","cc","dd","ee") > > I want to create an index which identifies the elements that are different > from, e.g. "aa" and "bb". > > When I do the following: > > jj = list!="aa" & list!="bb" > > > jj > [1] FALSE FALSE TRUE TRUE TRUE > > I do the job. But I wonder whether there is a shorter command to compare > the > elements of 'list' directly to both "aa" and "bb", avoiding the repetition > of '& list!=...' and get a result such as jj > > thanks! > > > > > -- > Andrea Mario Lavezzi > currently visiting the University of Oxford, Nuffield College > > Dipartimento Studi su Politica, Diritto e SocietÄ > Piazza Bologni 8 > 90134 Palermo, Italy > tel. ++39 091 23892208 > fax ++39 091 6112023 > skype: lavezzimario > email: lave...@unipa.it > web: http://www.unipa.it/~lavezzi <http://www.unipa.it/%7Elavezzi> > > [[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. > > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[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.