Hi, I am trying to find the total number of rows for a list of data.frames and want to know if there is a better way than using a loop like:
>df = { list of data.frame with varying number of rows...each one has a column called "COL" } >r = 0 > for (i in 1:length(df)) { + r = r + length(n[[i]]$CON) + } > r 6000123 <---- number of rows. Thanks, Chris -- View this message in context: http://r.789695.n4.nabble.com/SApply-versus-for-loop-for-list-of-data-frames-tp2991107p2991107.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.