[R] select subset based on another variable

[David Winsemius]

On May 13, 2010, at 9:48 AM, Carrie Li wrote:

> Hi, dear R-helpers,
>
> I have a simple question regarding selecting subset of a variable  
> based on
> another variable.
> Here is the example:
>
> xx=rnorm(10)
> id=sample(1:10, 10)
>
> temp=c(6, 1, 8, 2)
>
> Now, all I want is xx's that their id are 6, 1, 8, 2, instead of the
> position.
>
> Any suggestions ?

xx[temp]

-- 
David.
>
> Thank you all your help !!
>
> Carrie
>
> 	[[alternative HTML version deleted]]
>
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David Winsemius, MD
West Hartford, CT