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

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