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<?xml version="1.0" encoding="UTF-8"?>
<!--
 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) 2011 - DIGITEO - Allan CORNET
 * 
 * This file must be used under the terms of the CeCILL.
 * This source file is licensed as described in the file COPYING, which
 * you should have received as part of this distribution.  The terms
 * are also available at    
 * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
 *
 -->
<refentry version="5.0-subset Scilab" xml:id="issparse" xml:lang="ja"
          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">
  <info>
    <pubdate>$LastChangedDate$</pubdate>
  </info>

  <refnamediv>
    <refname>issparse</refname>

    <refpurpose>入力値が疎行列かどうかを調べる</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <title>呼び出し手順</title>

    <synopsis>res = issparse(S)</synopsis>
  </refsynopsisdiv>

  <refsection>
    <title>引数</title>

    <variablelist>
      <varlistentry>
        <term>S</term>

        <listitem>
          <para>scilabオブジェクト</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>res</term>

        <listitem>
          <para>1: 行列は疎行列, 0: その他</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsection>

  <refsection>
    <title>説明</title>

    <para><literal>res = issparse(S)</literal> は、S が疎行列の時に1,
    それ以外の時に0を返します.</para>
  </refsection>

  <refsection>
    <title>例</title>

    <programlisting role="example">sp = sparse([1,2;4,5;3,10],[1,2,3]);
if issparse(sp) == 1 then
  disp("It is a sparse");
end

A = 1;
if issparse(A) == 0 then
  disp("It is not a sparse");
end</programlisting>
  </refsection>

  <refsection role="see also">
    <title>参照</title>

    <simplelist type="inline">
      <member><link linkend="type">type</link></member>

      <member><link linkend="typeof">typeof</link></member>
    </simplelist>
  </refsection>
</refentry>