[R] Choose every second value

[Dimitris Rizopoulos]

try this:

a <- c(1,2,3,4,5,6)

n <- length(a)
a[seq(1, n, 2)]
a[seq(2, n, 2)]


I hope it helps.

Best,
Dimitris


Walther, Alexander wrote:
> Dear list,
> 
> is there a command that selects every second value from a given vector?
> For instance,
> 
> a <- c(1,2,3,4,5,6)
> 
> should yield
> 
> 1,3,5
> 
> and
> 
> 2,4,6
> 
> which i intend to place into two seperate vectors.
> 
> 
> best
> 
> Alex
> 
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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