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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
* Ajouter ici d'ventuels commentaires sur le fichier XML
-->
<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" version="5.0-subset Scilab" xml:id="plot" xml:lang="en">
<info>
<pubdate>$LastChangedDate: 26-05-2009 $</pubdate>
</info>
<refnamediv>
<refname>plot</refname>
<refpurpose>linear 2D plot</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>hdl = plot(X,Y,...,'PropertyName',PropertyValue,...)</synopsis>
<synopsis>hdl = plot(ax,X,Y,...)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term>X</term>
<listitem>
<para>1 by n or m by n matrix</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Y</term>
<listitem>
<para>1 by n or m by n matrix</para>
</listitem>
</varlistentry>
<varlistentry>
<term>ax</term>
<listitem>
<para>Axes handle</para>
</listitem>
</varlistentry>
<varlistentry>
<term>hdl</term>
<listitem>
<para>Handle of the created Polyline entity</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Description</title>
<para>plot(X,Y) plots vector Y versus vector X. If X or Y is a matrix,
then the vector is plotted versus the rows or columns of the matrix,
whichever line up.</para>
<para>plot(Y) plots the columns of Y versus their index. In all uses of
plot, the imaginary part is ignored.</para>
<para>Various line thickness/style, plot symbols or colors may be obtained
with plot(X,Y,S) where S is a character string made from one element from
any or all the following 3 colunms</para>
<informaltable>
<tr>
<td>y : yellow</td>
<td>. point</td>
<td>- : solid</td>
</tr>
<tr>
<td>m : magenta</td>
<td>o circle</td>
<td>-- : dashed</td>
</tr>
<tr>
<td>c : cyan</td>
<td>+ plus</td>
<td>-. : dash-dot</td>
</tr>
<tr>
<td>r : red</td>
<td>* star</td>
<td>2 : double thickness</td>
</tr>
<tr>
<td>g : green</td>
<td>d diamond</td>
<td>3 : triple thickness</td>
</tr>
<tr>
<td>b : blue</td>
<td>f filled diamond</td>
<td>... up to 9 times</td>
</tr>
<tr>
<td>w : white</td>
<td>t trefoil</td>
<td/>
</tr>
<tr>
<td>b : black</td>
<td>^ triangle up</td>
<td/>
</tr>
<tr>
<td/>
<td>v triangle down</td>
<td/>
</tr>
</informaltable>
<para>For example, plot(X,Y,'-c+') plots a cyan solid line with a plus at
each data point; plot(X,Y,'bd') plots blue diamond at each data point but
does not draw any line.</para>
<para>plot(X1,Y1,S1,X2,Y2,S2,X3,Y3,S3,...) combines the plots defined by
the (X,Y,S) triples, where the X's and Y's are vectors or matrices and the
S's are strings. For example, plot(X,Y,'y-',X,Y,'go') plots the data
twice, with a solid yellow line interpolating green circles at the data
points.</para>
<para>The plot command, if no color is specified, makes automatic use of
the colors.</para>
<para>When f is a function then plot(x,f) plots the parametric or non
parametric curve defined by f :</para>
<itemizedlist>
<listitem>
<para>If f has the syntax [y]=f(x) then plot(x,f) plots the
non-parametric y=f(x),</para>
</listitem>
<listitem>
<para>If f has the syntax [x,y]=f(t) then plot(t,f) plots the
parametric curve [x(t),y(t)], example :</para>
</listitem>
</itemizedlist>
<programlisting>
t=linspace(0,2*%pi,63);
plot(cos(t),sin(t),'-g^r',cos(t),sin(2*t),'thickness',2);
axis equal
legend 'circle' 'lissajous curve'</programlisting>
<para>The X,Y pairs, or X,Y,S triples, can be followed by parameter/value
pairs to specify additional properties of the plot.</para>
</refsection>
<refsection>
<title>Screenshot</title>
<screenshot>
<mediaobject>
<imageobject>
<imagedata fileref="plot.png"/>
</imageobject>
</mediaobject>
</screenshot>
</refsection>
<refsection>
<title>See Also</title>
<simplelist type="inline">
<member>
<link linkend="figure">figure</link>
</member>
<member>
<link linkend="clf">clf</link>
</member>
<member>
<link linkend="axis">axis</link>
</member>
<member>
<link linkend="xlabel">xlabel</link>
</member>
<member>
<link linkend="ylabel">ylabel</link>
</member>
<member>
<link linkend="title">title</link>
</member>
<member>
<link linkend="semilogx">semilogx</link>
</member>
<member>
<link linkend="semilogy">semilogy</link>
</member>
<member>
<link linkend="loglog">loglog</link>
</member>
<member>
<link linkend="hold">hold</link>
</member>
<member>
<link linkend="subplot">subplot</link>
</member>
</simplelist>
</refsection>
<refsection>
<title>Authors</title>
<simplelist type="vert">
<member>Stphane Mottelet</member>
</simplelist>
</refsection>
</refentry>
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