[R] returning the largest element in an array/matrix?

[Jacques VESLOT]

indcol <- rep(1:ncol(mat), each=nrow(mat))[which.max(mat)]
indrow <- rep(1:nrow(mat), ncol(mat))[which.max(mat)]


indrow <- which(apply(mat==max(mat),1,sum)!=0)
indcol <- which(apply(mat==max(mat),2,sum)!=0)


Michael a écrit :

>Hi all,
>
>I want to use "which.max" to identify the maximum in a 2D array/matrix and I
>want "argmin" and return the row and column indices.
>
>But "which.max" only works for vector...
>
>Is there any convinient way to solve this problem?
>
>Thanks a lot!
>
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