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<H2><A NAME="7_22">7.22  Adding static lines to the plot</A></H2>
<P> In addition to the bands you can also add static lines to the graph.
 An example of that is actually shown in figure 11 above. You create a
 line as an instance of <A href="../ref/PlotLine.html#_C_PLOTLINE">
 class PlotLine</A> . So for example the lines<DIV class="phpscript"><CODE>
<FONT color="#000000"> <FONT color="#0000BB">&nbsp;$sline&nbsp;</FONT><FONT color="#007700">
=&nbsp;new&nbsp;</FONT><FONT color="#0000BB">PlotLine</FONT><FONT color="#007700">
(</FONT><FONT color="#0000BB">HORIZONTAL</FONT><FONT color="#007700">,</FONT><FONT
color="#0000BB">0</FONT><FONT color="#007700">,</FONT><FONT color="#DD0000">
&quot;black&quot;</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">2</FONT><FONT
color="#007700">);
<BR></FONT><FONT color="#0000BB">$graph</FONT><FONT color="#007700">-&gt;</FONT><FONT
color="#0000BB">Add</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">
$sline</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
</FONT></CODE></DIV></P>
<P> will add a 2-pixel wide horizontal static line at Y-position zero.</P>
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