[R] sample

[Uwe Ligges]

T. Murlidharan Nair wrote:

> I am trying to sample a subset from a matrix using sample.
> The size of the matrix is 20X 1532. It works fine with this,
> but when I transpose the matrix and try to sample it, it returns
> null.  pick.set<-sample(tissue.exp.t,5,replace=FALSE,prob=NULL)
 >
> Is there something that I am missing here ?  Thanks ../Murli

Yes: tissue.exp.t is not a matrix.
Check it with, e.g.,  str().

Uwe Ligges

> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html