On Jul 9, 2011, at 9:37 PM, Rolf Turner wrote: > On 10/07/11 12:12, David Winsemius wrote: > > <SNIP> > > Uhhh, you meant >> drpidx <- -c(5,10, i) >> x <- x[-drpidx, ] >> > Yes, I certainly did. Thanks for the correction. > cheers, > > Rolf Turner > David Winsemius, MD West Hartford, CT