Re: [R] compare 2 vectors Christophe Pallier wrote: > On 6/28/07, JoÃ£o Fadista  wrote: >    >> I would like to take out the values from one vector that are equal to the >> values in another vector. >> >> Example: >> a <- c(1,2,3,4,5,6,7,8,9) >> b <- c(3,10,20,5,6) >> b_noRepeats = c(10,20) >> >> >>      >  b[!(b %in% intersect(a,b))] > > See ?intersect >    Hi, There is also a pretty useful operator %w/o% in the help page of %in%. see :  > ?`%in%`  > a <- c(1,2,3,4,5,6,7,8,9)  > b <- c(3,10,20,5,6)  > b %w/o% a [1] 10 20 Cheers, Romain --  Mango Solutions data analysis that delivers Tel:  +44(0) 1249 467 467 Fax:  +44(0) 1249 467 468 Mob:  +44(0) 7813 526 123 ______________________________________________ R-help@stat.math.ethz.ch 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.