sample(data, 3, replace=FALSE)[,-1:2]
or
sample(data, 3, replace=FALSE)[,-c("id","pID50")]Tyler On Wed, Jul 14, 2010 at 1:17 PM, Addi Wei [via R] < ml-node+2289092-1912443153-77...@n4.nabble.com<ml-node%2b2289092-1912443153-77...@n4.nabble.com> > wrote: > id pID50 apol a_acc a_acid a_aro a_base a_count > 1 mol.11 3.63 -0.882267 -0.527967 -0.298197 -1.032380 0 -1.063410 > 2 mol.14 3.38 -1.007330 -0.527967 -0.298197 -1.032380 0 -1.063410 > 3 mol.19 3.18 1.153560 1.407910 -0.298197 1.254100 0 1.160080 > 4 mol.20 3.14 0.183448 -0.527967 -0.298197 0.873019 0 0.290021 > 5 mol.29 2.77 -0.273901 -0.527967 -0.298197 0.110860 0 -0.193347 > 6 mol.30 2.74 -0.230593 -0.527967 -0.298197 0.110860 0 0.000000 > 7 mol.40 2.16 -1.117550 -0.527967 -0.298197 -1.032380 0 -1.256760 > 8 mol.45 1.90 -0.383560 -0.527967 -0.298197 0.110860 0 -0.290021 > 9 mol.48 1.73 -0.383560 -0.527967 -0.298197 0.110860 0 -0.290021 > > > What if I want to exclude 2 columns? > For example: sample(data, 3, replace=FALSE) ##from my sample, i want > to exclude *both *id and pID50 > > Thanks much. > > ------------------------------ > View message @ > http://r.789695.n4.nabble.com/Want-to-exclude-a-column-when-using-sample-function-tp2287988p2289092.html > To unsubscribe from Re: Want to exclude a column when using sample > function, click here< (link removed) ==>. > > > -- View this message in context: http://r.789695.n4.nabble.com/Want-to-exclude-a-column-when-using-sample-function-tp2287988p2289173.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] ______________________________________________ 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.
