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[scilab.git] / scilab / modules / cacsd / help / pt_BR / plot_display / sgrid.xml
1 <?xml version="1.0" encoding="ISO-8859-1"?>
2 <!--
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16 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:ns4="http://www.w3.org/1999/xhtml" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:id="sgrid" xml:lang="en">
17     <refnamediv>
18         <refname>sgrid</refname>
19         <refpurpose>esboça linhas de grid de um s-plano </refpurpose>
20     </refnamediv>
21     <refsynopsisdiv>
22         <title>Seqüência de Chamamento</title>
23         <synopsis>sgrid()
24             sgrid('new')
25             sgrid(zeta,wn [,color])
26         </synopsis>
27     </refsynopsisdiv>
28     <refsection>
29         <title>Descrição</title>
30         <para>Usado em conjunto com evans, esboça linhas de taxa de amortecimento
31             constante (<literal>zeta</literal>) e freqüência natural
32             (<literal>wn</literal>).
33         </para>
34         <variablelist>
35             <varlistentry>
36                 <term>sgrid()</term>
37                 <listitem>
38                     <para>adiciona um grid sobre uma raiz do s-plano contínuo existente
39                         com valores padrões para <literal>zeta</literal> e
40                         <literal>wn</literal>.
41                     </para>
42                 </listitem>
43             </varlistentry>
44             <varlistentry>
45                 <term>sgrid('new')</term>
46                 <listitem>
47                     <para>limpa a tela de gráficos e então esboça um grid de s-plano
48                         padrão 
49                     </para>
50                 </listitem>
51             </varlistentry>
52             <varlistentry>
53                 <term>sgrid(zeta,wn [,color])</term>
54                 <listitem>
55                     <para>
56                         é o mesmo que <literal>sgrid()</literal> mas utiliza a taxa de
57                         amortecimento e a freqüência natural fornecidas.
58                     </para>
59                 </listitem>
60             </varlistentry>
61         </variablelist>
62     </refsection>
63     <refsection>
64         <title>Exemplos</title>
65         <programlisting role="example"><![CDATA[ 
66 H=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c'));
67 evans(H,100)
68 sgrid()
69 sgrid(0.6,2,7)
70  ]]></programlisting>
71     </refsection>
72     <refsection role="see also">
73         <title>Ver Também</title>
74         <simplelist type="inline">
75             <member>
76                 <link linkend="evans">evans</link>
77             </member>
78         </simplelist>
79     </refsection>
80 </refentry>