[R] Matrix in a Reverse order

[Benilton Carvalho]

x[nrow(x):1,]

b

On Thu, Feb 18, 2010 at 11:45 AM, Amelia Livington
<amelia_livington at yahoo.com> wrote:
> Dear 'R' friends
>
> I have a sort of stupid question to ask.
>
> I have a matrix say of the order 4 X 3 as
>
> 83    98    90
> 21    83    84
> 70    39    56
> 65    29    38
>
> Is there any command in R which will reverse the order i.e. I need to have same 4 X 3 matrix but as given below
>
> 65    29    38
> 70    39    56
> 21    83    84
> 83    98    90
>
> i.e. the last row becomes first row, second - last row becomes second row and so on. I need this to allign it with some other variable set.
>
> Thanks
>
> Amelia
>
>
>
>
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