% Fig. 5.20   Feedback Control of Dynamic Systems, 8e 
%             Franklin, Powell, Emami
% 

clf 

s=tf('s');

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

rlocus(sysL)

axis([-4 4 -3 3])

%grid on

title('Fig. 5.20 Root locus for L=1/s(s+2)(s^2+2s+5)')
z=0.1:.2:.9;
 wn=1:1:5;
% sgrid(z, wn)
 hold off
 
 set(findall(gcf,'type','line'),'linewidth',3);

% set(gco,'LineWidth',4) 

 