`bode`

: plot magnitude and phase of the frequency response of a linear system.`gainplot`

: same as bode but plots only the magnitude of the frequency response.`nyquist`

: plot of imaginary part versus real part of the frequency response of a linear system.`m_circle`

: M-circle plot used with nyquist plot.`chart`

: plot the Nichols'chart`black`

: plot the Black's diagram (Nichols'chart) for a linear system.`evans`

: plot the Evans root locus for a linear system.`plzr`

: pole-zero plot of the linear system

s=poly(0,'s'); h=syslin('c',(s^2+2*0.9*10*s+100)/(s^2+2*0.3*10.1*s+102.01)); h1=h*syslin('c',(s^2+2*0.1*15.1*s+228.01)/(s^2+2*0.9*15*s+225)); //bode xsetech([0.,0.,0.5,0.5],[-1,1,-1,1]); gainplot([h1;h],0.01,100); //nyquist xsetech([0.5,0.,0.5,0.5],[-1,1,-1,1]); nyquist([h1;h]) //chart and black xsetech([0.,0.5,0.5,0.5],[-1,1,-1,1]); black([h1;h],0.01,100,['h1';'h']) chart([-8 -6 -4],[80 120],list(1,0)); //evans xsetech([0.5,0.5,0.5,0.5],[-1,1,-1,1]); H=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c')); evans(H,100)

Figdirfigures/