R help - Feb 2010 - Matrix in a Reverse order

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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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
>
>
>
>
> ? ? ? ?[[alternative HTML version deleted]]
>
>
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