[R] problem with matrix

[Duncan Murdoch]

On 16/05/2016 12:10 PM, Denis Francisci wrote:
> Hi all,
> I've a simple question.
> I have a matrix with same values over and under the diagonal. That's an
> example:
>    [,1] [,2]     [,3]
> [1,]      NaN   45 63.43495
> [2,] 45.00000  NaN 90.00000
> [3,] 63.43495   90      NaN
> How can I extract just the three values over (or under) the diagonal and
> convert them in a  vector like this: 45, 63.43495, 90 ?
>
> Thank's in advance
>

See ?upper.tri.

Duncan Murdoch