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<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
<MAN>
  <LANGUAGE>eng</LANGUAGE>
  <TITLE>m_circle</TITLE>
  <TYPE>Scilab Function</TYPE>
  <DATE>April 1993</DATE>
  <SHORT_DESCRIPTION name="m_circle"> M-circle plot</SHORT_DESCRIPTION>
  <CALLING_SEQUENCE>
    <CALLING_SEQUENCE_ITEM> m_circle()  </CALLING_SEQUENCE_ITEM>
    <CALLING_SEQUENCE_ITEM> m_circle(gain)  </CALLING_SEQUENCE_ITEM>
  </CALLING_SEQUENCE>
  <PARAM>
    <PARAM_INDENT>
      <PARAM_ITEM>
        <PARAM_NAME>gain</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: vector of gains (in DB). The default value is</SP>
          <PARAM_INDENT>
            <PARAM_ITEM>
              <PARAM_NAME>gain</PARAM_NAME>
              <PARAM_DESCRIPTION>
                <SP>=[-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]</SP>
              </PARAM_DESCRIPTION>
            </PARAM_ITEM>
          </PARAM_INDENT>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
    </PARAM_INDENT>
  </PARAM>
  <DESCRIPTION>
    <P><VERB>m_circle</VERB> is used with <VERB>nyquist</VERB>.</P>
  </DESCRIPTION>
  <EXAMPLE>
<![CDATA[
//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]);
 ]]>
  </EXAMPLE>
  <SEE_ALSO>
    <SEE_ALSO_ITEM>
      <LINK>nyquist</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>chart</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>black</LINK>
    </SEE_ALSO_ITEM>
  </SEE_ALSO>
  <AUTHOR>S.Steer.;   </AUTHOR>
</MAN>
