How to draw the pole of the closed-loop system based on LQR

X ̇=AX+Bu

A=[0 1 0 0;0 0 1 0;-3 1 2 3;2 1 0 0]

B=[1 0;2 1;3 2;4 3]

Q=diag([1 2 3 4])

R=eye(2)

[K S P]=lqr(A B Q R)

now I should plot the curves for each state of the closed loop system.

but if I use ss,I don't know C and D;if I use tf,I I don't know the specific numerator and denominator

What instructions should I use ?

Thank you very much!

[mahmoud]

Difine your C, and D matrices then use the following code

>> sys_cl = ss((A - B*K),B,C,D);

>> pzmap(sys_cl)