How to perform an array multiplication for a vector and a matrix and output results as a matrix?

Here is the problems and solution which seems very bad. Could anyone suggest a better solution?

M = [1 2 3];

C = [10 11 12; 13 14 15; 16 17 18; 19 20 21; 22 23 24];

K1=C(1,:).*M

K2=C(2,:).*M

K3=C(3,:).*M

K4=C(4,:).*M

K5=C(5,:).*M

B = vertcat(K1,K2,K3,K4,K5)

Answer 1

[the cyclist]

You might want this instead:

B = bsxfun(@times,C,M)

[Alex Khazaradze]

Thanks!

Answer 2

[the cyclist]

Matrix multiplication is a core MATLAB function. I think you just want

B = C * M'

Notice that that is just a "*", not a ".*" (which is element-by-element) multiplication, and that I had to transpose M.

[Alex Khazaradze]

I just tried it and got: Error using * Inner matrix dimensions must agree.

[the cyclist]

I forgot the transpose when I first posted. Also, I just looked at your B matrix, and it seems you do not want simply matrix multiplication after all.

You expect the result to be a 5x3 and not a 5x1, right?

[Alex Khazaradze]

Thanks, for help, but if B=C * M' I get the answer: B =

    68
    86
   104
   122
   140

While I would like to have following: B =

    10    22    36
    13    28    45
    16    34    54
    19    40    63
    22    46    72

Answer 3

[freebil]

I think this works:

M = [1 2 3];
C = [10 11 12; 13 14 15; 16 17 18; 19 20 21; 22 23 24];

for i=1:length(C)
    result(i,:)=M.*C(i,:);
end

[Alex Khazaradze]

Thank you!