To update on this. I ran the same command on a grid of computers with 32gb ram, and it completed in 15 seconds, compared to the ~20 minutes on my desktop.
Simply a ram issue as suspected by a few on the list here. Thanks -- View this message in context: http://r.789695.n4.nabble.com/Adding-column-to-dataframe-tp2330556p2339076.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.
