Hi On 11 Nov 2004 at 14:33, Alexander Sokol wrote:
> Hello, > > I have the following very simple problem: > > Say I have two vectors, > > a<-c(1,7,4,5,9,11) > b<-c(7,4,9) > > I would like to create a vector containing the elements in a which are > not in b. > a%in%b [1] FALSE TRUE TRUE FALSE TRUE FALSE > !a%in%b [1] TRUE FALSE FALSE TRUE FALSE TRUE > a[!a%in%b] [1] 1 5 11 > Is it OK? Cheers Petr > > Obviously, this is possible by writing > > a[a!=b[1] & a!=b[2] & a!=b[3]] > > But I would like a solution which is applicable to the situation where > the number of elements in b is unknown. > > I have looked in the R manuals, the FAQ and the mailing lists, but > have been unable to find a solution. > > Thank you for your replies, > Alexander > > ______________________________________________ > [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 Petr Pikal [EMAIL PROTECTED] ______________________________________________ [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
