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<?xml version="1.0" encoding="UTF-8"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) XXXX-2008 - INRIA
*
* 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="nnz" xml:lang="en"
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>nnz</refname>
<refpurpose>número de entradas não-nulas de uma matriz</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Seqüência de Chamamento</title>
<synopsis>n=nnz(X)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Parâmetros</title>
<variablelist>
<varlistentry>
<term>X</term>
<listitem>
<para>matriz de reais ou complexos esparsa (ou cheia) </para>
</listitem>
</varlistentry>
<varlistentry>
<term>n</term>
<listitem>
<para>inteiro, número de elementos não-nulos de X. </para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Descrição</title>
<para><literal>nnz</literal> conta o número de entradas não-nulas de uma
matriz esparsa ou cheia.</para>
</refsection>
<refsection>
<title>Exemplos</title>
<programlisting role="example"><![CDATA[
sp=sparse([1,2;4,5;3,10],[1,2,3]);
nnz(sp)
a=[1 0 0 0 2];
nnz(a)
]]></programlisting>
</refsection>
<refsection>
<title>Ver Também</title>
<simplelist type="inline">
<member><link linkend="spget">spget</link></member>
</simplelist>
</refsection>
</refentry>
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