position of maximum in matrix

Hi,

I'm going to find the position of maximum value in every column of a matrix

Answer 1

[John]

Let's say

 A = [1 2 3; 4 5 6; 7 8 9];

[row,columns] = size(A); index_matrix = zeros(1,columns)

for i = 1:columns

      [large,index] = max(:,i);
      index_matrix(i) = index;

end

%The index_matrix vector should store the position of the max value of each column

Answer 2

[per isakson]

Help says:

    C = max(A,[],dim) returns the largest elements along the dimension 
    of A specified by scalar dim. For example, max(A,[],1) produces the 
    maximum values along the first dimension of A.

Answer 3

[Andrei Bobrov]

M - matrix, please read here.

[value,index] = max(M);