Hi All, I am using Rx64 3.0.1 on Windows 7 x64, and wanted to get two last rows from dataset. First, I tried library(datasets) > data<-airquality > data[nrow(data)-1:nrow(data),]
and received 152 rows sorted desc. Could you explain why it worked this way? I changed the extract line to: data[(nrow(data)-1):nrow(data),] and then I received what I wanted but still am curious about the performance of my previous code. Yours faithfully, Rafał ______________________________________________ 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.
