Hi, 'unique' or its combination with 'match' if you need to keep the vector the same length will do it:
> a<-c(1,2,4,2,5,5,6,7,8) > unique(a) [1] 1 2 4 5 6 7 8 > a[ which( is.na( match(1:length(a), match(unique(a),a)) ) ) ]=NA > a [1] 1 2 4 NA 5 NA 6 7 8 This is probably not the best implementation, but it does the job. 'table' will also give you the number of occurances of unique values: > a<-c(1,2,4,2,5,5,6,7,8) > table(a) a 1 2 4 5 6 7 8 1 2 1 2 1 1 1 Oleg stat stat wrote: > Dear all R users, > > Is there any function to omit repeated values in a vector? Your help will > be highly appreciated. > > Thanks > stat > > > --------------------------------- > Here’s a new way to find what you're looking for - Yahoo! Answers > [[alternative HTML version deleted]] > > > > ------------------------------------------------------------------------ > > ______________________________________________ > 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. -- Dr Oleg Sklyar * EBI/EMBL, Cambridge CB10 1SD, England * +44-1223-494466 ______________________________________________ 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.
