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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Adding marker lines to the matrix plot</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="ch22.html" title="Chapter 22. Matrix graphs"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Adding marker lines to the matrix plot</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 22. Matrix graphs</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Adding marker lines to the matrix plot"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2593845"></a>Adding marker lines to the matrix plot</h2></div></div></div>
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<p>
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</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
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<p>This feature was added in 3.1.1p</p>
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</div><p>
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</p>
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<p>In order to mark important divisions in the plot it is possible to add an instance of
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<code class="code">class PlotLine</code> (either horizontal or vertical line) to each plot in the
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graph. For example, to add one vertical and one horizontal plot line the following lines
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can be added to the matrix script</p>
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<p>
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</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags"><?php</span><span class="hl-code">
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</span><span class="hl-var">$mp</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">MatrixPlot</span><span class="hl-brackets">(</span><span class="hl-var">$data</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Create two lines to add as markers</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$l1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">PlotLine</span><span class="hl-brackets">(</span><span class="hl-identifier">VERTICAL</span><span class="hl-code">, </span><span class="hl-number">5</span><span class="hl-code">, </span><span class="hl-quotes">'</span><span class="hl-string">lightgray:1.5</span><span class="hl-quotes">'</span><span class="hl-code">, </span><span class="hl-number">4</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$l2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">PlotLine</span><span class="hl-brackets">(</span><span class="hl-identifier">HORIZONTAL</span><span class="hl-code">, </span><span class="hl-number">3</span><span class="hl-code">, </span><span class="hl-quotes">'</span><span class="hl-string">lightgray:1.5</span><span class="hl-quotes">'</span><span class="hl-code">, </span><span class="hl-number">4</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Add lines to the plot</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$mp</span><span class="hl-code">-></span><span class="hl-identifier">AddLine</span><span class="hl-brackets">(</span><span class="hl-var">$l1</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$mp</span><span class="hl-code">-></span><span class="hl-identifier">AddLine</span><span class="hl-brackets">(</span><span class="hl-var">$l2</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> this could also be done as</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-comment">//</span><span class="hl-comment"> $mp->AddLine(array($l1,$l2));</span><span class="hl-comment"></span><span class="hl-code">
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...
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</span><span class="hl-inlinetags">?></span></pre></td></tr></table></div><p>
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</p>
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<p>The example in <a class="xref" href="ch22s06.html#fig.matrix_ex06" title="Figure 22.11. Adding plot lines to the matrix plot (matrix_ex06.php)">Figure 22.11. Adding plot lines to the matrix plot <code class="uri"><a class="uri" href="example_src/matrix_ex06.html" target="_top">(<code class="filename">matrix_ex06.php</code>)</a></code> </a> shows an example of this</p>
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<p>
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</p><div class="figure"><a name="fig.matrix_ex06"></a><p class="title"><b>Figure 22.11. Adding plot lines to the matrix plot <code class="uri"><a class="uri" href="example_src/matrix_ex06.html" target="_top">(<code class="filename">matrix_ex06.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/matrix_ex06.png" alt="Adding plot lines to the matrix plot (matrix_ex06.php)"></span> </div></div><p><br class="figure-break">
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</p>
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