Create Matrix from Multiple Matrices

I have 3 matrices as follows-

A = [1 2 3]

A = 1×3

1 2 3

B = [4 5 6]

B = 1×3

4 5 6

C = [7 8 9]

C = 1×3

7 8 9

I want to create a matrix D as follows-

[1 4 7; 1 4 8; 1 4 9; 1 5 7; 1 5 8; 1 5 9; 1 6 7; 1 6 8; 1 6 9; 2 4 7; 2 4 8; 2 4 9; 2 5 7; 2 5 8; 2 5 9; 2 6 7; 2 6 8; 2 6 9; 3 4 7; 3 4 8; 3 4 9; 3 5 7; 3 5 8; 3 5 9; 3 6 7; 3 6 8; 3 6 9]

ans = 27×3

1 4 7 1 4 8 1 4 9 1 5 7 1 5 8 1 5 9 1 6 7 1 6 8 1 6 9 2 4 7

How do I do this?

Answer 1

[Rounak Saha Niloy]

I have got a better option since my matrix size is large and no. of matrices is also large.

If my matrices are- A, B,C and so on...

D= combvec(A,B,C, ...)

Answer 2

[Walter Roberson]

A = [1 2 3];
B = [4 5 6];
C = [7 8 9];
[Ag, Bg, Cg] = ndgrid(C, B, A);
D = fliplr([Ag(:), Bg(:), Cg(:)])

D = 27×3

1 4 7 1 4 8 1 4 9 1 5 7 1 5 8 1 5 9 1 6 7 1 6 8 1 6 9 2 4 7

Answer 3

[Kevin Holly]

A = [1 2 3];
B = [4 5 6];
C = [7 8 9];
D = [];
    
for i = A
    for ii = B
        for iii = C
            D = [D;i ii iii];
        end
    end
end
D

D = 27×3

1 4 7 1 4 8 1 4 9 1 5 7 1 5 8 1 5 9 1 6 7 1 6 8 1 6 9 2 4 7