Multipying each element of a matrix with average of elements in other matrix

1 view (last 30 days)
I have a 3x3 matrix(A) with all diagonal elements 0, and 3x1 matrix(B). I want to multiply each element of the 3x3 matrix using elements from the 3x1 matrix in the following way: element A(1,2) will be multipled by the average of elements at position 1 and 2 in B.
Similarly each element in A will be multiplied by average of corresponding elements in B.
Is there a way to do this.

Accepted Answer

Simon Chan
Simon Chan on 14 Jul 2021
Try this:
w = (B(X)+B(Y))/2;
C = A.*w

More Answers (1)

Image Analyst
Image Analyst on 14 Jul 2021
Did you try the obvious and simple for loop?
% Create sample data.
A = rand(3);
A(logical(eye(3))) = 0
B = rand(3, 1)
% Now we have our data and can begin...
for col = 1 : 3
for row = 1 : 3
factor = mean([B(row), B(col)]);
A(row, col) = factor * A(row, col);
A % Show in command window.


Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!