Take for example the following data.frame: a<-c(1,1,5) b<-c(3,2,3) c<-c(5,1,5) sample.data.frame<-data.frame(a=a,b=b,c=c)
I'd like to be able to use unique(sample.data.frame), but have unique() ignore column a when determining the unique elements. However, I figured that this would be setting for incomparables=, but it appears that this funcationality hasn't been incorporated. Is there a work around for this, i.e. to be able to get unique to only look at selected columns of a data frame? Thanks, Andrew ______________________________________________ [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.
