[R] S. function calculating x +- y

[Gabor Grothendieck]

On Fri, Mar 4, 2011 at 12:22 PM, Sascha Vieweg <saschaview at gmail.com> wrote:
> Hello, I am looking for an elegant one-liner for the following operation:
>
> x <- rnorm(10)
> y <- runif(10)
> c(mean(x)-mean(y), mean(x)+mean(y))
>
> I thought about
>
> apply(data.frame(x, y), 2, mean)
>
> but I don't know how to apply the +- operation on the result of apply.

Try:

mean(x) + c(-1, 1) * mean(y)



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