To subtract the output of a for loop manipulation sequentially from a data set

Please i need hint on how to make the output of this for loop (N) to be subtract from M sequentially without skipping any of the numbers. I tried this code and it did not give me the correct answer as it ignored some numbers.

for f = [1   4   8   10  14  18   22  26  30  34  38  42  45  48   52];
  b=2;
  c=1;
  d=1;
  N= f*b*c*d;
   end 
  M=[4.5  10.5   20.5   25.6  30.8  34.6  35.8  38.4  17.2   18.5  20.5  22.6  24.5  26.6 28.9];
  Y = (M-N);
  A = sum(Y);
disp(A)

[EDITED, Jan, please apply a proper code formatting - Thanks]

[Jan]

The question is not clear. What should be subtracted from what? The value of N is overwritten in each iteration. What do you want to achieve? What would be the correct answer for the given data?

[dpb]

How is this any different from the previous question other than the length of the input vectors? <how-to-get-the-sum-of-the-difference-of-the-output-from-a-multiplication-and-a-data-set>?

As before, you've again got constants inside a looping structure which is of no use and I showed the individual results there the first time until you said it wasn't the answer were looking for.

As Jan says, you've got to first define the problem unequivocally if it isn't as give previously.

[Thorsten]

Could you provide a small example that shows the input and the expected result?

Answer 1

[Jan]

A bold guess:

f = [1   4   8   10  14  18   22  26  30  34  38  42  45  48   52];
b = 2;
c = 1;
d = 1;
N = f*b*c*d;
M = [4.5, 10.5, 20.5, 25.6, 30.8, 34.6, 35.8, 38.4, 17.2, 18.5, 20.5, 22.6, ...
     24.5, 26.6, 28.9];
Y = (M-N);
A = sum(Y);
disp(A)

[dpb]

That's the solution he accepted in the previous question, Jan...which raises the question of what's now different?

http://www.mathworks.com/matlabcentral/answers/257966-how-to-get-the-sum-of-the-difference-of-the-output-from-a-multiplication-and-a-data-set#answer_201455

[segun]

Thanks for your response.Please i need the one with for loop above to work properly because i want to apply it to a situation with three cascades of matrices.The one without for loop did not work when applied to the three cascade matrices.If you have time i could send the real cascade i want to do for you run on MATLAB ,then you will have an understanding of why i am insisting on for loop usage

[dpb]

Well, you'se gotta' answer the question of what it is that you actually want...you rejected the solution that "makes the above loop properly" last time as not the correct answer.

[segun]

Please kindly check this code sent to me by somebody who i explained what i wanted to do with this style of coding as i know you are more experienced in MATLAB.

for f= [1 4 8 10 14 18 22 26 30 34 38 42 45 48 52]; b = 2; c = 1; d = 1; N =zeros; N = f*b*c*d; end M = [4.5, 10.5, 20.5, 25.6, 30.8, 34.6, 35.8, 38.4, 17.2, 18.5, 20.5, 22.6 ,24.5, 26.6, 28.9]; N= 0; for k =1:length(M); for i = 1:length(N); Y = sum(M-N) ; end end disp(Y)

[dpb]

It doesn't help to explain non-working code with the same non-working code. We need to see what the answer that you think you should get is and how you arrived at it, not code that doesn't do what you intend it to do. Also, show what the end problem is for which the previous solution didn't work.