MATLAB: Adding matric to an empty matric

Question

Hello,

I have an empty matrix

em = [];

I also have other matrices x1, x2 and x3;

t = 0:1/32798:0.25-1/32798;

x1 = sin(2*pi*1356*t) + sin(2*pi*297*t);

x2 = sin(2*pi*3336*t) + sin(2*pi*997*t);

x3 = sin(2*pi*2336*t) + sin(2*pi*497*t);

I would like to add x1, x2, and x3 into em.

since x1, x2 and x3 are 1 x 8199. I would like to put x1 in row1, x2 in row 2 and x3 in row 3.

How do I do this?

Thank you.

Answer 1

 em=[x1;x2;x3]

or

 em=vertcat(x1, x2, x3)

or

em = cat(1,x1,x2,x3);