extract cells by columns/rows from matrix
which(data==max(data),arr.ind=TRUE) gives you the indices of the largest element. which(data==data[order(data)[2]],arr.ind=TRUE) the indices of the second largest. Best Jannis
On 04/14/2011 10:23 PM, Nicolas Gutierrez wrote:
hi All, I have a matrix Ufi (x by y) 1 2 3 4 5 1 0 0 0 0 3 2 0 0 0 9 0 3 0 2 0 0 3 4 0 0 1 0 0 5 0 1 0 0 0 And I need the x and y "coordinates" of those cells with maximum values: First: x=4; y=2 (Value=9) Second: x=5; y=3 (value=3) Any help? THANKS! Nic
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