Hi @Amy, to calculate the average of each column in a matrix while ignoring zero values, you can use MATLAB's logical indexing and array operations. Here’s how you can achieve this:
- Create the Matrix: Define the matrix in MATLAB.
- Calculate Averages: Iterate over each column, exclude zeros, and compute the average.
- Display the Result: Store the averages and display them.
Here is how you can achieve this:
A = [1, 3, 5, 0, 0, 0;
2, 0, 3, 4, 0, 0;
3, 0, 0, 3, 0, 1;
4, 2, 2, 1, 8, 2;
5, 3, 3, 0, 5, 0;
6, 7, 0, 0, 2, 0];
averages = zeros(1, size(A, 2));
for col = 1:size(A, 2)
columnData = A(:, col);
nonZeroData = columnData(columnData ~= 0);
if ~isempty(nonZeroData)
averages(col) = mean(nonZeroData);
else
averages(col) = NaN;
end
end
disp('Matrix A:');
disp(A);
disp('Column averages (ignoring zeros):');
disp(averages);
Now, you can correctly compute and display the average of non-zero elements for each column
