How can shape a matrix with predefined vectors?

I want to make a 3*12 matrix which its first, second and third row is N1, N2 and N3.

N1, N2 and N3 are 1*12 vectors.

I can use [N1(1) N1(2) ....N1(12); N2(1) N2(2) ....N2(12); N3(1) N3(2) ... N3(12)]

but it's ugly and slow, I want to use Matlab special features in matrix handling.

Answer 1

N = [N1; N2; N3];

Answer 2

You have a general function of concatenation that you could look at. Learn to handle it, it is very useful !

 >> help cat

It should solve your problem with

 >> cat(1,N1,N2,N3) 

Note : it is equivalent to

 >> [N1;N2;N3]