Calculation between 2 vectors where one is 4d and other is 1d

Dear,

I have 2 vectors. One is of 4d form and other is of 1d form. The value of one vector will be subtracted from the values of the othe vector.

Example:

A=[val(:,:,1,1)
      = 0.67
    val(:,:,2,1)
        =0.55
   val(:,:,3,1)
        =0.12
   val(:,:,1,2)
      = 0.12
    val(:,:,2,2)
        =0.50
    val(:,:,3,2)
        =0.11
]
B=[1
    0]

The operation would be like this one

Result=[
            val(:,:,1,1) =0.67-1
            val(:,:,2,1) =0.55-1
            val(:,:,3,1) =0.12-1
            val(:,:,1,2) =0.12-0
            val(:,:,2,2) =0.5-0
            val(:,:,3,2) =0.11-0
]    

Would you please help me calculating this?

thanks,

Answer 1

[Raghunandan V]

Hi,

small explanation of How I approached the answer. I changed domenstion on B so that it would that of A and the subtracted them both

A = zeros(5,5, 3,2) ;%assumed Dimensions
%value storing
A(:,:,1,1)= 0.67;
A(:,:,2,1)= 0.55;
A(:,:,3,1)= 0.12;
A(:,:,1,2)= 0.12;
A(:,:,2,2)= 0.5;
A(:,:,3,2)= 0.11;

B = [1 ;0];
%get dimenstions of A
[m n o p ] = size(A);

%create two temporary matrices
R1 = B(1)*ones(m,n,o);
R2 = B(2)*ones(m,n,o);
%here multiplication is used to make it versatile for any value of B

%initialize new B
NewB = zeros(m,n,o,p);
NewB(:,:,:,1)= R1;
NewB(:,:,:,2)= R2;

result = A - NewB;

[Saugata Bose]

@Raghunandan V: thanks fr ur help. i m giving you the feedback after implementing it in my main code.