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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) ENPC - Jean-Philippe Chancelier
*
* 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="grayplot" 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:ns4="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>grayplot</refname>
<refpurpose>esboo 2d de uma superfcie utilizando-se cores</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Seqncia de Chamamento</title>
<synopsis>grayplot(x,y,z,[strf,rect,nax])
grayplot(x,y,z,<opt_args>)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Parmetros</title>
<variablelist>
<varlistentry>
<term>x,y</term>
<listitem>
<para>vetores de reais de tamanhos n1 e n2. .</para>
</listitem>
</varlistentry>
<varlistentry>
<term>z</term>
<listitem>
<para>matriz de reais de tamanho (n1,n2). <literal>z(i,j)</literal>
o valor da superfcie no ponto(x(i),y(j)). </para>
</listitem>
</varlistentry>
<varlistentry>
<term><opt_args></term>
<listitem>
<para> representa uma seqncia de declaraes <literal>key1=value1,
key2=value2</literal>,... onde <literal>key1</literal>,
<literal>key2,...</literal> podem ser um dos seguintes: rect, nax,
strf ou axesflag e frameflag (ver <literal>plot2d</literal> e
<literal>plot2d_old_version</literal>).</para>
</listitem>
</varlistentry>
<varlistentry>
<term>strf,rect,nax</term>
<listitem>
<para>ver <literal>plot2d</literal>.</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Descrio</title>
<para><literal>grayplot</literal> faz um esboo 2d de uma superfcie dada
por <literal>z</literal> em um grid definido por <literal>x</literal> e
<literal>y</literal>. Cada retngulo no grid preenchido com um nvel de
cinza ou de cor dependendo do valor mdio de <literal>z</literal> nas
quinas do retngulo.</para>
<para>Entre com o comando <literal>grayplot()</literal> para visualizar
uma demonstrao.</para>
</refsection>
<refsection>
<title>Exemplos</title>
<programlisting role="example"><![CDATA[
x=-10:10; y=-10:10;m =rand(21,21);
grayplot(x,y,m,rect=[-20,-20,20,20])
t=-%pi:0.1:%pi; m=sin(t)'*cos(t);
clf()
grayplot(t,t,m)
]]></programlisting>
</refsection>
<refsection>
<title>Ver Tambm</title>
<simplelist type="inline">
<member><link linkend="fgrayplot">fgrayplot</link></member>
<member><link linkend="plot2d">plot2d</link></member>
<member><link linkend="Sgrayplot">Sgrayplot</link></member>
<member><link linkend="Sfgrayplot">Sfgrayplot</link></member>
</simplelist>
</refsection>
<refsection>
<title>Autor</title>
<para>J.Ph.C.</para>
</refsection>
</refentry>
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