R help - Feb 2011 - Sample function in R???

Hi, R users,

I'm wondering if there a way in R I can select cases based on a probability
vector. if a case is selected, that case is marked as 1, otherwise, 0.

For example:

x<-12:18
y<-1:7
sample(x,2,replace=FALSE,y)

I got:

[1] 15 17

What I want to see is:

[1] 0 0 0 1 0 1 0


Thanks.
Gary

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On 2011-02-19 10:32, Hongwei Dong wrote:
> Hi, R users,
>
> I'm wondering if there a way in R I can select cases based on a
probability
> vector. if a case is selected, that case is marked as 1, otherwise, 0.
>
> For example:
>
> x<-12:18
> y<-1:7
> sample(x,2,replace=FALSE,y)
>
> I got:
>
> [1] 15 17
>
> What I want to see is:
>
> [1] 0 0 0 1 0 1 0
Maybe:

  (x %in% sample(x,2,replace=FALSE,y)) * 1

Peter Ehlers
>
>
> Thanks.
> Gary
>
> 	[[alternative HTML version deleted]]
>
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