<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
<MAN>
  <LANGUAGE>eng</LANGUAGE>
  <TITLE>zgrid</TITLE>
  <TYPE>Scilab Function</TYPE>
  <DATE>April 1993</DATE>
  <SHORT_DESCRIPTION name="zgrid"> zgrid plot</SHORT_DESCRIPTION>
  <CALLING_SEQUENCE>
    <CALLING_SEQUENCE_ITEM>zgrid()    </CALLING_SEQUENCE_ITEM>
  </CALLING_SEQUENCE>
  <DESCRIPTION>
    <P>
    plots z-plane grid lines: lines of constant 
    damping factor (zeta) and natural frequency (Wn) are 
    drawn in within the unit Z-plane circle.</P>
    <P>
    Iso-frequency curves are shown in frequency*step on the
    interval [0,0.5]. Upper limit corresponds to Shannon
    frequency <VERB>( 1/dt &gt; 2*f )</VERB>.</P>
  </DESCRIPTION>
  <SEE_ALSO>
    <SEE_ALSO_ITEM>
      <LINK>frep2tf</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>freson</LINK>
    </SEE_ALSO_ITEM>
  </SEE_ALSO>
</MAN>
