Finding the column with the maximum value by row
Hi, You should be able to reach your goal using functions "which" and "apply"
On 7/17/2012 3:03 PM, Christopher Desjardins wrote:
Hi, Let's say I have the following data:
a=matrix(c(1,2,4,4,2,1,1,2,4),nrow=3,byrow=T) a
[,1] [,2] [,3] [1,] 1 2 4 [2,] 4 2 1 [3,] 1 2 4 What syntax should I use to get R to tell me the column that corresponds to the maximum value for each row? For my example, I would like to get a vector that says 3, 1, 3 because the maximum value for row 1 is in column 3, the maximum value for row 2 is in column 1, and the maximum value for row 3 is in column 3. Does that make sense? Please cc me if you reply! Chris [[alternative HTML version deleted]]
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