How to Create array with repeating values of another array

Hi I have an array say x = [1 2 3 4 5] generated from previous code. I want to then create an array y = [1 1 2 2 3 3 4 4 5 5] what is the easiest way to accomplish this?

Answer 1

[Brendan Hamm]

x = [1 2 3 4 5];
y = repelem(x,2)
y =
     1     1     2     2     3     3     4     4     5     5

Answer 2

[Titus Edelhofer]

Hi David,

use repmat and linear indexing:

x = [1 2 3 4 5];
% repeat two times:
xx = repmat(x, 2, 1);
% and access all elements
xRep = xx(:)'
xRep =
   1     1     2     2     3     3     4     4     5     5

Titus

[David Quilligan]

great Thanks!