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<?xml version="1.0" encoding="UTF-8"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 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_V2.1-en.txt
*
-->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:lang="en" xml:id="fourplan">
<refnamediv>
<refname>fourplan</refname>
<refpurpose>augmented plant to four plants</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>[P11,P12,P21,P22]=fourplan(P,r)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Arguments</title>
<variablelist>
<varlistentry>
<term>P</term>
<listitem>
<para>
<literal>syslin</literal> list (linear system)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>r</term>
<listitem>
<para>
1x2 row vector, dimension of <literal>P22</literal>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>P11,P12,P21,P22</term>
<listitem>
<para>
<literal>syslin</literal> lists.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Description</title>
<para>
Utility function.
</para>
<para>
<literal>P</literal> being partitioned as follows:
</para>
<programlisting role=""><![CDATA[
P=[ P11 P12;
P21 P22]
]]></programlisting>
<para>
with <literal>size(P22)=r</literal> this function returns the four linear systems <literal>P11,P12,P21,P22</literal>.
</para>
</refsection>
<refsection role="see also">
<title>See Also</title>
<simplelist type="inline">
<member>
<link linkend="lqg">lqg</link>
</member>
<member>
<link linkend="lqg2stan">lqg2stan</link>
</member>
<member>
<link linkend="lqr">lqr</link>
</member>
<member>
<link linkend="lqe">lqe</link>
</member>
<member>
<link linkend="lft">lft</link>
</member>
</simplelist>
</refsection>
</refentry>
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