Vector form of for loop?

I have a piece of code that works fine. But it has a for loop as below:

M=5;
N=10;
abc=0.0;
for m1=1:M*N
  abc=abc+(abs(yo(m1,1)-ye(m1,1))).^2;  
end 
abc=abc/(M*N); 
e=abc;

What will be its vectored form to reduce the execution time?

[Torsten]

This has already been answered by Jan here:

https://de.mathworks.com/matlabcentral/answers/1856713-all-is-correct-but-this-code-gives-error?s_tid=srchtitle

e = mean((yo - ye).^2);

Answer 1

[Matt J]

e=norm(yo-ye).^2/M/N

[Matt J]

Thank you both dear Torsten and Matt J for your kind responses.

You're quite welcome. If the answer addresses your post, please Accept-click it.

Here is the complete script, how will I reduce its computational time?

Perhaps as below:

yo = yMatTR(deg2rad(u), steerVecT, steerVecR); 
ye = yMatTR(deg2rad(b), steerVecT, steerVecR); 

e=norm(yo-ye).^2/(M*N);

function y = yMatTR(targetAngle, steerVecT, steerVecR)

   steerA = steerVecT(targetAngle); 
   steerB = steerVecR(targetAngle); 

   y=sum( steerA.*permute(steerB,[3,2,1]) ,2);

   y=y(:);
 
end

[Sadiq Akbar]

Thank you dear Matt J for your help. Indeed it works. And I am going to accept your answer. But before acceptance, can you make me understand on the line:

y=sum( steerA.*permute(steerB,[3,2,1]) ,2);

Also is it true for any lenght of vector u?

Regards,

[Matt J]

Also is it true for any lenght of vector u?

Yes, try it.

can you make me understand on the line:

Perhaps an example,

steerA=randi(5,3,2)

steerA = 3×2

5 4 4 2 5 2

steerB=randi(50,3,2);
%original version
steerM = zeros(size(steerA, 1)*size(steerB, 1), size(steerA,2)); 
for idxK = 1 : size(steerM,2)
    steerM(:, idxK) = kron(steerB(:, idxK), steerA(:, idxK));
end

%new version
steerM2=steerA.*permute(steerB,[3,2,1]);

%compare
steerM,steerM2

steerM = 9×2

30 176 24 88 30 88 160 104 128 52 160 52 160 20 128 10 160 10

steerM2 = 
steerM2(:,:,1) =

    30   176
    24    88
    30    88


steerM2(:,:,2) =

   160   104
   128    52
   160    52


steerM2(:,:,3) =

   160    20
   128    10
   160    10

[Sadiq Akbar]

Thanks a lot dear Matt J for your kind help.Regards,