For loops in Matlab

C=[ ];

for A=1:4

      B=[5 10 5 10];

end

   C=[A,B]

for example :

A=1:4

and

B=[5 10 5 10]
if A==1 & 3 then B==5, and when A==2&4 B==10

   A   B
   1   5
   2   10
   3   5
   4   10

How we could use Matlab code to obtain the above loop as shown in the picture, Thank you in advance for your assistance,

Answer 1

[Amit]

I think simple doing

C = [A' B'];

would work. You dont need to do this in a loop.

[UTS]

WOW, Thank you for your prompt reply. However, I got error as:

Error using horzcat Dimensions of matrices being concatenated are not consistent.

Error in checkthis (line 8) C = [A' B']

[Amit]

Well in simple terms, in [X Y], both X and Y should be column matrix (nx1) When I wrote [A' B'], I assumed both A and B being row vector as A = 1:4, create a row matrix and B = [5 10 5 10] creates a row matrix. If this changed any how in your code, you have to modify C = [A' B'] accordingly.

Do me a favor and post the result for size(A) and size(B) before you do C = [A' B']

[UTS]

Thank you very much, I tried to do this

B=[5 10 5 10];

A=[]; C=[B,A]

for A=1:4

    B=[5 10 5 10];

size(A);

 size(B) ;

 C=[A';B']

end

The answer as:

C =

     1
     5
    10
     5
    10

C =

     2
     5
    10
     5
    10

C =

     3
     5
    10
     5
    10

C =

     4
     5
    10
     5
    10

[Amit]

Okay, that's the problem.

What I said was to do is:

B = [5,10,5,10];
A = 1:4;
C = [A' B'];

Than simple. No loops, nothing.

[UTS]

Thank you very much C =

     1     5
     2    10
     3     5
     4    10