It seems that sample picks columns when the object is turned into a data.frame. I do not knoe why it is doing that....
Is this something that was meant and not documented or something? Jean On Fri, 11 Feb 2005, Adaikalavan Ramasamy wrote: > See below. > > On Thu, 2005-02-10 at 14:53 -0800, T. Murlidharan Nair wrote: > > Just to explain my previous mail, here is the output I get. > > > > > > > dim(tissue.exp) > > [1] 1532 20 > > What is this object ? Try class(tissue.exp) > > > > pick<-sample(tissue.exp,5,replace=TRUE) > > > dim(pick) > > [1] 1532 5 > > >From help(sample) : > > sample(x, size, replace = FALSE, prob = NULL) > > x: Either a (numeric, complex, character or logical) vector of > more than one element from which to choose, or a positive > integer. > > x has to be a vector or positive integer integer. I am not sure how you > got "sample" to work on tissue.exp in the first place. Maybe you got > your own version of "sample". > > > > > tissue.exp.t<-t(tissue.exp) > > > dim(tissue.exp.t) > > [1] 20 1532 > > > pick<-sample(tissue.exp.t,5,replace=TRUE) > > > dim(pick) > > NULL > > > > -------- > > Thanks ../Murli > > > > ______________________________________________ > > [email protected] mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide! > > http://www.R-project.org/posting-guide.html > > > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
