How to extend a row vector so the result is a table?

I have 1 x 1200 row vector and need to extend each column down 1200 spots so that the result is a 1200 x 1200 table with the same values of x

So for example:

4 3 1 2

would become

4 3 1 2
'''''''' 
. . . .
. . . . 
x 1200
4 3 1 2

Answer 1

[Azzi Abdelmalek]

a=[4 3 1 2]
b=repmat(a,1200,1)