Hi, I apologize if this topic has been discussed - I could not figure out a good search phrase for this question.
I have a named vector x, with multiple (duplicate) names, and I would like to obtain a (shorter) vector with non-duplicate names in which the values are the means of the values of the duplicated indexes in x. My best (fastest) solution to this was this code: nms <- names( x ) x.uniq <- sapply( unique( nms ), function( i ) mean( subtracted[ nms == i ] ) ) However, this takes forever on my beefy Mac Pro. Is there a faster way to this using pre-written functions in R? Thanks a lot for any advice. -David ______________________________________________ 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.
