MATLAB: How to sum multiple matrices

matrixsum

Hello, I 'm new in matlab and I need help please. I have 3 matrix A,B et C. the size of each matrix is 1000*1121. I want to sum the 3 matrix (A+B+C) and save the result in a matrix D (for example : D[1,1]= A[1,1]+B[1,1]+C[1,1]). Please, how can I implement this problem in matlab? and thanks in advance

Best Answer

Product of matrices is "*". Therefore, if they're the same size, D= A*B*C; If instead you want elementwise product, D = A.*B.*C; But all of this is very basic, and explained in the documentation.

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MATLAB: Matrix define using for loop

Read about diag.

A = -4*ones(9,1) ; 
B = [1 1 0 1 1 0 1 1] ; 
C = ones(1,6) ; 
iwant = diag(C,-3)+ diag(B,-1) + diag(A) +diag(B,1) + diag(C,3)

MATLAB: 3D Figures of Looping Variables

Hi Zaharaddeen, you can use a for loop to plot each variable.

Vars = {'A','B','C'};
for i = 1:3
    figure
    plot3(Save(:,i),Save(:,4),Save(:,5))
    xlabel(Vars{i})
    ylabel('Sum')
    zlabel('Product')
    grid on
end

Best Answer

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