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positionmaxoctaveargmax

Octave position of maximum value in column

I want to find the argmax of the values in a matrix by column, e.g.:

1 2 3    2 3 3
4 5 6 -> 
3 7 8

I feel like I should just be able to map an argmax/posmax function over the columns, but I don't see a particularly intuitive way to do this in Octave.

Solution

  • Read max function documentation here

    [max_values indices] = max(input);

    Example:

    input =

1   2   3
4   5   6
3   7   8

[max_values indices] = max(input)
max_values =

4   7   8

indices =

2   3   3