scilab/modules/sparse/help/fr_FR/matrixmanip/speye.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:ns5="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="speye" xml:lang="fr">
   3     <refnamediv>
   4         <refname>speye</refname>
   5         <refpurpose>matrice identité creuse</refpurpose>
   6     </refnamediv>
   7     <refsynopsisdiv>
   8         <title>Séquence d'appel</title>
   9         <synopsis>Isp=speye(nrows,ncols)
  10             Isp=speye(A)
  11         </synopsis>
  12     </refsynopsisdiv>
  13     <refsection>
  14         <title>Paramètres</title>
  15         <variablelist>
  16             <varlistentry>
  17                 <term>nrows</term>
  18                 <listitem>
  19                     <para>entier (nombre de lignes)</para>
  20                 </listitem>
  21             </varlistentry>
  22             <varlistentry>
  23                 <term>ncols</term>
  24                 <listitem>
  25                     <para>entier (nombre de colonnes)</para>
  26                 </listitem>
  27             </varlistentry>
  28             <varlistentry>
  29                 <term>A</term>
  30                 <listitem>
  31                     <para>matrice creuse</para>
  32                 </listitem>
  33             </varlistentry>
  34             <varlistentry>
  35                 <term>sp</term>
  36                 <listitem>
  37                     <para>matrice identité creuse</para>
  38                 </listitem>
  39             </varlistentry>
  40         </variablelist>
  41     </refsection>
  42     <refsection>
  43         <title>Description</title>
  44         <para>
  45             <literal>Isp=speye(nrows,ncols)</literal> renvoie une matrice
  46             identité creuse <literal>Isp</literal> avec <literal>nrows</literal>
  47             lignes et <literal>ncols</literal> colonnes.
  48         </para>
  49         <para>
  50             <literal>Isp=speye(A)</literal> renvoie une matrice identité creuse
  51             de même taille que <literal>A</literal>. Si
  52             <literal>[m,n]=size(A)</literal>, les commandes
  53             <literal>speye(m,n)</literal> et <literal>speye(A)</literal> sont
  54             équivalentes. En particulier <literal>speye(3)</literal> n'est pas
  55             équivalent à <literal>speye(3,3)</literal>.
  56         </para>
  57     </refsection>
  58     <refsection>
  59         <title>Exemples</title>
  60         <programlisting role="example"><![CDATA[
  61 eye(3,3)-full(speye(3,3))
  62  ]]></programlisting>
  63     </refsection>
  64     <refsection role="see also">
  65         <title>Voir aussi</title>
  66         <simplelist type="inline">
  67             <member>
  68                 <link linkend="sparse">sparse</link>
  69             </member>
  70             <member>
  71                 <link linkend="full">full</link>
  72             </member>
  73             <member>
  74                 <link linkend="eye">eye</link>
  75             </member>
  76             <member>
  77                 <link linkend="spzeros">spzeros</link>
  78             </member>
  79             <member>
  80                 <link linkend="spones">spones</link>
  81             </member>
  82         </simplelist>
  83     </refsection>
  84 </refentry>