[R] Size argument in sample function

Daniel Malter daniel at umd.edu
Fri Jun 17 19:53:39 CEST 2011


I am sure there is a more elegant version of doing this. But this works:

x<-rnorm(20)
y<-matrix(1:5) #number of points to sample
f<-function(z){sample(x,z)}
apply(y,1,f)

Just adjust y to your liking.

HTH,
Daniel


alfredo wrote:
> 
> Hi All,
> 
> I'd like to randomly sample a vector N times, where each successive random
> sample increases in size. I have realised that the function sample does
> not take vectors for arguments. For example,
> 
> x<-rnorm(20,0,1)
> sample(x,c(1,2,3)) ## will only return one random sample of size 1. 
> 
> The trick seems to be getting past the size argument of the function. I've
> tried different things without success. Any help would be most
> appreciated!
> 
> Thanks,
> 
> A
> 

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