MATLAB: Calculate maximums and its indices

indexindicesmatrixmaximum

Hello,

I have a matrix with 6000 lines and 118 columns (6000 x 118).

How do I calculate the maximum (and its index) of each column?

This means that I want 118 maximuns and 118 indices.

Best Answer

x = rand(6000, 118); % you input matrix
[val, ind] = max(x, [], 1);

Related Solutions

MATLAB: The minimum value of a matrix array and its index

A = rand(1,5); %example matrix
[mini,index] = min(A) %mini= minimum value, index =  index of minimum value

A = rand(5) %example 5x5 matrix
[minRow,indexRow]=min(A)
[minCol,indexCol]=min(minRow)
index = [indexRow(indexCol) indexCol] %minimum value o 5x5 matrix (row index, column index)

or can use: (https://es.mathworks.com/help/matlab/ref/min.html)

A = rand(5)
[M,I] = min(A(:));
[I_row, I_col] = ind2sub(size(A),I);
index = [I_row I_col]

MATLAB: How to find indices of values that are fraction of the maximum value

   ind=find(x>=.95*max(x));

Best Answer

Related Solutions

MATLAB: The minimum value of a matrix array and its index

MATLAB: How to find indices of values that are fraction of the maximum value

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