On Fri, 17 Aug 2007, Jiong Zhang, PhD wrote: > Hi All, > > I had 12766 elements in a column, 12566 are values and 200 are "NA"s. I > used the following line to get the ranks: > > total_list$MB.rank <- rank(-total_list$MB,ties.method="min",na.last=NA) > > but I got an error message: > > Error in `$<-.data.frame`(`*tmp*`, "BCRP_PW_F.rank", value = c(3949, 6182, : > replacement has 12199 rows, data has 12766 > > What shall I do to keep the "NA"s as "NA"s? thanks a lot.
If all else fails try reading the help! You have to select the right option for na.last, and yours is not it. I suspect you want na.last="keep", but only you know what you mean. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ 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.
