[R] Finding the maximum elements in an array/matrix

[R. Michael Weylandt]

As they say, RTFM....in particular, this part:

? which.max --> See Also:

     Use ‘arrayInd()’, if you need array/matrix indices instead of 1D
     vector ones.

Michael

On Thu, Mar 29, 2012 at 10:27 PM, jpm miao <miaojpm at gmail.com> wrote:
> Hello,
>
>   I would like to find the maximum element in a matrix or an array but it
> does not return what I want.
>
>   For example, If I have a 2*2 matrix A whose maximum element is the
> A(1,2). I would like the answer (1,2), but it returns 3, which is the
> ordinal if one counts by columns. Is there any function that returns (1,2)?
>
>
>   Thanks
>
>> A<-rbind(c(1,4), c(3,2))> A     [,1] [,2]
> [1,]    1    4
> [2,]    3    2> which.max(A)[1] 3
>
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>
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