On 08/18/2010 06:58 PM, Chen,Shaofei wrote:
Hello all,
I have a question regarding sample() in R. For example, I have a set:
set<- c(2,3,5)
and I want to draw 5 samples from this set, so replacement is true:
m<- sample(set, 5, replace=TRUE)
However here comes a problem, for example, I will have (2,3,3,2,5), but I
will also get (3,3,5,5,3) in some cases. This means element 2 has not been
sampled in this case.
The way I want to do is to random sample with replacement, but all elements
have to be sampled.
Any solutions?
Well, if all elements have to be sampled once, then those 3 elements
will not be random, since they must be present.
So you're really only sampling 2 elements from the set, so just do that.
c(1:3, sample(set, 2, replace = TRUE)
although I really wonder what you're trying to do here?
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