[R] Simplest question ever...

[Paul Lynch]

I'm not sure this is the most efficient, but how about:
   diag(m[a,b])
?

On 3/1/07, yoooooo <magno_yu at ml.com> wrote:
>
> Let's say i have
>
> a = c(1, 4, 5)
> b = c(2, 6, 7)
>
> and i have matrix m, what's an efficient way of access
> m[1, 2], m[4, 6], m[5, 7]
> like of course m[a, b] = is not going to do, but what's an expression that
> will allow me to have that list?
>
> Thanks!
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