Duplicating columns into a matrix

Hi!

I think this is very easy to solve, but I simply dont know what is the easiest way. Let's say I have a vector:

A=[1 2 3]

Now I want to repeat this column into a Matrix

B=[1 2 3; 1 2 3; 1 2 3]

How do I go about this?

Thanks in advance.

Alexander

Answer 1

[Birdman]

 B=repmat(A,3,1)

[Alexander Engman]

Yepp. Thanks a lot!

Answer 2

[Jan]

Or:

B = A(ones(1,3), :)

This is what happens inside repmat also. It has slightly less overhead, but I'd prefer repmat instead - for unclear reasons.