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<H2><A NAME="8_22">8.22 Adding static lines to the plot</A></H2>
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<P> In addition to the bands you can also add static lines to the graph.
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An example of that is actually shown in figure 11 above. You create a
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line as an instance of <A href="../ref/PlotLine.html#_C_PLOTLINE">
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class PlotLine</A> . So for example the lines<DIV class="phpscript"><CODE>
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<FONT color="#000000"> <FONT color="#0000BB"> $sline </FONT><FONT color="#007700">
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= new </FONT><FONT color="#0000BB">PlotLine</FONT><FONT color="#007700">
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(</FONT><FONT color="#0000BB">HORIZONTAL</FONT><FONT color="#007700">,</FONT><FONT
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color="#0000BB">0</FONT><FONT color="#007700">,</FONT><FONT color="#DD0000">
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"black"</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">2</FONT><FONT
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color="#007700">);
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<BR></FONT><FONT color="#0000BB">$graph</FONT><FONT color="#007700">-></FONT><FONT
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color="#0000BB">Add</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">
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$sline</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
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</FONT></CODE></DIV></P>
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<P> will add a 2-pixel wide horizontal static line at Y-position zero.</P>
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