% Fig. 5.19   Feedback Control of Dynamic Systems, 8e 
%             Franklin, Powell, Emami
% 

clf

s=tf('s'); 

sysL=(1)/((s*(s+2))*((s+1)^2+4));

pzmap(sysL)

axis([-4 4 -3 3])
title('Fig.5.19 Departure angle calculation')
z=0.:.2:.9;
 wn=1:1:4;
% sgrid(z, wn)
 hold off