finding minimum from two matrix

I have matrix A and B of same order. I want to find minimum nonzero value of matrix A and its location. If A has more than one same minimum values than minimum should be selected from B matrix from the given location of matrix A. How I get one minimum value from matrix A and B and its lOcation in a loop. Thanks

Answer 1

[Deepak]

Hey @jano satti,

As per your query, you can find the minimum value of matrix A and the minimum value of matrix B at those locations using the following method -

A = [1 0 3; 2 0 5; 0 4 0];
B = [7 8 9; 6 5 4; 3 2 1];

% Initialize the minimum value and its location
minValueA = Inf;
minLocationA = [0, 0];

% Loop through each element of matrix A
[row, col] = size(A);
for i = 1:row
    for j = 1:col
        % Check if the element is nonzero and smaller than the current minimum
        if A(i, j) ~= 0 && A(i, j) < minValueA
            % Update the minimum value and its location
            minValueA = A(i, j);
            minLocationA = [i, j];
        end
    end
end

% Initialize the minimum value from matrix B
minValueB = Inf;

% Loop through each element of matrix A again
for i = 1:row
    for j = 1:col
        % Check if the element of A is equal to the minimum value of A
        if A(i, j) == minValueA
            % Check if the corresponding element in B is smaller than the current minimum
            if B(i, j) < minValueB
                % Update the minimum value from matrix B
                minValueB = B(i, j);
            end
        end
    end
end

% Display the minimum value of A, its location, and the minimum value of B
disp("Minimum Value of A: " + minValueA);
disp("Location in A: " + minLocationA);
disp("Minimum Value of B at the location: " + minValueB);