[R] subsampling

[Peter Dalgaard]

nicolas.deig at epfl.ch writes:

> hi,
> 
> I would like to subsample the array c(1:200) at random into ten subsamples 
> v1,v2,...,v10.

(Why are you c()'ing a single vector?)

> I tried with to go progressively like this:
> 
> 
> > x<-c(1:200)
> > v1<-sample(x,20)
> > y<-x[-v1]
> > v2<-sample(y,20)
> 
> and then I want to do:
> 
> >x<-y[-v2]
> Error: subscript out of bounds.

That's not going to work (hint, the values contained in y do not
correspond to their indices).

I'd just do 

split(sample(1:200),rep(1:10,each=20))

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
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