MATLAB® and Its Applications in Engineering: [Based on MATLAB 7.5 (R2007b)]

3.8. Generation of Special Matrices

The following MATLAB commands/functions, which generate special matrices, are often used in engineering computations involving matrices:

1. zeros(p, q)

   It returns a rectangular p × q matrix of all zeros.

   Let p = 2 and q = 3, and execute the following commands.

        p=2;
        q=3;
        A=zeros(p, q)
   

   This will generate a (2 × 3) matrix with all elements equal to zero. The following result will be shown

        A =
            0    0    0
            0    0    0
   

2. ones(p, q)

   It returns a p × q matrix of all ones.

   Let p = 2, q = 3, and execute the following commands.

        p=2;
        q=3;
        A=ones(p, q)
   

   It will generate a (2 × 3) matrix with all elements equal to one. The following result will be shown:

        A =
            1    1    1
            1    1    1
   

3. eye(p, q)

   It returns a p × q matrix with ones on the main diagonal and zeros ...