how separate the complex number as shown in the explain as following?

I have a problem with the complex number

comp=a+ib

a1+ib1

a2+ib2

...

...

..

an+ibn

then I separated the real signal about the imaginary signal like this;

real(comp)

imag(comp)

the result is

a

a1

a2

.

.

an

and

b1

b2

.

.

bn

my problem how can I put the sequence the real signal after imag signal as the follow

a

a1

a2

.

.

an

b1

b2

.

.

b2n

Answer 1

[KSSV]

Simple either concatenate them or use vertcat.

s = rand(100,1)+1i*rand(100,1) ;
iwant = [real(s) ; imag(s)]      % concatenate 
iant = vertcat(real(s),imag(s))  % use vertcat

[abdullah qasim]

thank u very much