% U53, Example 5.4, Satellite Control w/ Lead Compensator
% 

s = tf( 's' )

sysG = (s+1)/(s^2*(s+12));

rlocus( sysG, 'r' );

axis('equal')
axis([-13, 1, -5, 5]) 
set(gco,'LineWidth',4)   % For example