Hi there. One more thing you could try is to avoid evaluation of length(CRX) every loop.
Assign the length to a variable before the loop. Regards, Phil -- View this message in context: http://r.789695.n4.nabble.com/Make-a-loop-more-efficient-tp2955912p2956274.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.