On Oct 20, 2010, at 9:25 AM, skan wrote: > > Hello > > How can I select several not continuous rows ? > > If I wanted to select rows 1 to 7 I'll write > mydata[,1:7] > > But what if I need to select rows 1 to 5 and 10 to 15? mydata[ , c(1:5, 10:15) ] -- David Winsemius, MD West Hartford, CT