On 2/5/2008 1:52 PM, Judith Flores wrote:
> Hi there,
>
> I want to generate different samples using the
> followindg code:
>
>
> g<-sample(LETTERS[1:2], 24, replace=T)
>
> How can I specify that I need 12 "A"s and 12 "B"s?
>
> Thank you,
>
> Judith
x <- rep(c("A","B"), each=12)
x
[1] "A" "A" "A" "A" "A" "A" "A" "A" "A" "A" "A"
[12] "A" "B" "B" "B" "B" "B" "B" "B" "B" "B" "B"
[23] "B" "B"
# "sample(x) generates a random permutation of the elements of x"
g <- sample(x)
g
[1] "A" "A" "B" "A" "B" "B" "B" "B" "A" "B" "A"
[12] "A" "B" "A" "A" "A" "B" "B" "B" "A" "A" "B"
[23] "A" "B"
>
> ____________________________________________________________________________________
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>
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