File: m_circle.cat

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m_circle(1)                    Scilab Function                    m_circle(1)
NAME
  m_circle - M-circle plot

CALLING SEQUENCE
   m_circle()
   m_circle(gain)

PARAMETERS

  gain : vector of gains (in DB). The default value is

       gain
         =[-12 -8 -6 -5 -4 -3 -2 -1.4 -1 -.5 0.25 0.5 0.7 1 1.4 2 2.3 3 4 5 6
         8 12]

DESCRIPTION
  m_circle is used with nyquist.

EXAMPLE
  //Example 1 :
    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))
    nyquist(h,0.01,100,'(s^2+2*0.9*10*s+100)/(s^2+2*0.3*10.1*s+102.01)')
    m_circle();
  //Example 2:
    xbasc();
    h1=h*syslin('c',(s^2+2*0.1*15.1*s+228.01)/(s^2+2*0.9*15*s+225))
    nyquist([h1;h],0.01,100,['h1';'h'])
    m_circle([-8 -6 -4]);

SEE ALSO
  nyquist, chart, black

AUTHOR
  S.Steer.