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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Using layout classes to position Windrose plots</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="ch21.html" title="Chapter 21. Windrose"></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">Using layout classes to position Windrose plots</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 21. Windrose</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Using layout classes to position Windrose plots"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sec.windrose-layout-classes"></a>Using layout classes to position Windrose plots</h2></div></div></div>
<p>Normally we don't want to have to calculate the absolute x and y coordinates when
positioning multiple Windrose plots in graph as was done in <a class="xref" href="ch21s02.html#fig.windrose_2plots_ex1" title="Figure 21.7. Adding two windrose plots to the same graph (windrose_2plots_ex1.php)">Figure 21.7. Adding two windrose plots to the same graph <code class="uri"><a class="uri" href="example_src/windrose_2plots_ex1.html" target="_top">(<code class="filename">windrose_2plots_ex1.php</code>)</a></code> </a>. A much better concept would be to just tell
the library to position three windrose plots horizontally or vertically without having
to figure out the exact coordinates our self.</p>
<p>This is where layout classes come in handy.</p>
<p>There are two types of layouts; horizontal and vertical. To specify that two windroses
should be positioned side by side (horizontal) a new horizontal layout object is created
and then the two windroses plots are added as object within the horizontal layout class.
Later on when the objects are about to be stroked on the graph the horizontal layout
class will take all its objects and spread them out evenly along a horizontal line
depending on the individual size of each windrose. The same principle applies to the
vertical layout class with the obvious change in direction.</p>
<p>The layout object are added to the graph in exactly the same was as odometers, by
calling the <code class="code">WindroseGraph::Add()</code> method. </p>
<p>The following line would create a horizontal line of three windrose plots</p>
<p>
</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">&lt;?php</span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-identifier">WindroseGraph</span><span class="hl-brackets">(</span><span class="hl-var">$width</span><span class="hl-code">,</span><span class="hl-var">$height</span><span class="hl-brackets">)</span><span class="hl-code">;
...
</span><span class="hl-comment">//</span><span class="hl-comment"> Create three plots</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$w1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data1</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.25</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data2</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w2</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.25</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w3</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data3</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w3</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.25</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Position them even horizontally</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$hor</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$w1</span><span class="hl-code">, </span><span class="hl-var">$w2</span><span class="hl-code">, </span><span class="hl-var">$w3</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> add and send back to the client</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$hor</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div><p>
</p>
<p>Since both horizontal en vertical layout can be combined it is possible to create
almost any rectangular layout. For example to create a 4x4 graph first two horizontal
layouts would be created and they would then be included in a vertical layout as the
following principle code snippet shows.</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags">&lt;?php</span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-identifier">WindroseGraph</span><span class="hl-brackets">(</span><span class="hl-var">$width</span><span class="hl-code">,</span><span class="hl-var">$height</span><span class="hl-brackets">)</span><span class="hl-code">;
...
</span><span class="hl-comment">//</span><span class="hl-comment"> Create three plots</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$w1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data1</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.24</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data2</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w2</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.24</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w3</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data3</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w3</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.24</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w4</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data4</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$w4</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.24</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Create the two rows</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$hor1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$w1</span><span class="hl-code">, </span><span class="hl-var">$w2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$hor2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$w3</span><span class="hl-code">, </span><span class="hl-var">$w4</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> positioned on top of each other</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$vert</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutVert</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-var">$hor1</span><span class="hl-code">, </span><span class="hl-var">$hor2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> add and send back to the client</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$vert</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div><p>
</p>
<p>An example of this is shown in <a class="xref" href="ch21s06.html#fig.windrose_layout_ex0" title="Figure 21.17. Using layout classes to position 4 windrose plots (windrose_layout_ex0.php)">Figure 21.17. Using layout classes to position 4 windrose plots <code class="uri"><a class="uri" href="example_src/windrose_layout_ex0.html" target="_top">(<code class="filename">windrose_layout_ex0.php</code>)</a></code> </a></p>
<p>
</p><div class="figure"><a name="fig.windrose_layout_ex0"></a><p class="title"><b>Figure 21.17. Using layout classes to position 4 windrose plots <code class="uri"><a class="uri" href="example_src/windrose_layout_ex0.html" target="_top">(<code class="filename">windrose_layout_ex0.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/windrose_layout_ex0.png" alt="Using layout classes to position 4 windrose plots (windrose_layout_ex0.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>A slightly more complex example where some more formatting have been added is shown in
<a class="xref" href="ch21s06.html#fig.windrose_layout_ex1" title="Figure 21.18. Using layout classes to position 5 windrose plots (windrose_layout_ex1.php)">Figure 21.18. Using layout classes to position 5 windrose plots <code class="uri"><a class="uri" href="example_src/windrose_layout_ex1.html" target="_top">(<code class="filename">windrose_layout_ex1.php</code>)</a></code> </a> where two larger plots are in the top
row and three smaller plots are shown in the bottom row.</p>
<p>
</p><div class="example"><a name="example.windrose_layout_ex1"></a><p class="title"><b>Example 21.6. Using layout classes to position 5 windrose plots (<code class="filename">windrose_layout_ex1.php</code>) </b></p><div class="example-contents"> <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">&lt;?php</span><span class="hl-code">
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_windrose.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Some data for the five windrose plots</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$data</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code">
</span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code">
</span><span class="hl-number">1</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">10</span><span class="hl-code">,</span><span class="hl-number">10</span><span class="hl-code">,</span><span class="hl-number">13</span><span class="hl-code">,</span><span class="hl-number">7</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-number">2</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">2</span><span class="hl-code">,</span><span class="hl-number">8</span><span class="hl-code">,</span><span class="hl-number">10</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-number">4</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">1</span><span class="hl-code">,</span><span class="hl-number">12</span><span class="hl-code">,</span><span class="hl-number">22</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code">
</span><span class="hl-number">4</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">12</span><span class="hl-code">,</span><span class="hl-number">8</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-code">,</span><span class="hl-number">3</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-number">2</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code">
</span><span class="hl-number">1</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">12</span><span class="hl-code">,</span><span class="hl-number">8</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-code">,</span><span class="hl-number">3</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-number">3</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code">
</span><span class="hl-number">2</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">12</span><span class="hl-code">,</span><span class="hl-number">8</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-code">,</span><span class="hl-number">3</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-number">3</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code">
</span><span class="hl-number">4</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">12</span><span class="hl-code">,</span><span class="hl-number">8</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-code">,</span><span class="hl-number">3</span><span class="hl-brackets">)</span><span class="hl-code">,
</span><span class="hl-number">6</span><span class="hl-code"> =&gt; </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-code">,</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Legend range colors</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$rangecolors</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">green</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-quotes">'</span><span class="hl-string">yellow</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-quotes">'</span><span class="hl-string">red</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-quotes">'</span><span class="hl-string">brown</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Create a windrose graph with titles</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindroseGraph</span><span class="hl-brackets">(</span><span class="hl-number">750</span><span class="hl-code">,</span><span class="hl-number">700</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">Multiple plots with automatic layout</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFont</span><span class="hl-brackets">(</span><span class="hl-identifier">FF_ARIAL</span><span class="hl-code">,</span><span class="hl-identifier">FS_BOLD</span><span class="hl-code">,</span><span class="hl-number">14</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Setup the individual windrose plots</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$wp</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">for</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$i</span><span class="hl-code">=</span><span class="hl-number">0</span><span class="hl-code">; </span><span class="hl-var">$i</span><span class="hl-code"> &lt; </span><span class="hl-number">5</span><span class="hl-code">; ++</span><span class="hl-var">$i</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">WindrosePlot</span><span class="hl-brackets">(</span><span class="hl-var">$data</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetType</span><span class="hl-brackets">(</span><span class="hl-identifier">WINDROSE_TYPE8</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">if</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$i</span><span class="hl-code"> &lt; </span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.28</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-reserved">else</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">legend</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Hide</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.16</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetCenterSize</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-number">.25</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetRangeColors</span><span class="hl-brackets">(</span><span class="hl-var">$rangecolors</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> Position with two rows. Two plots in top row and three plots in</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> bottom row.</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$hl1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-number">0</span><span class="hl-brackets">]</span><span class="hl-code">, </span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$hl2</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutHor</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-number">2</span><span class="hl-brackets">]</span><span class="hl-code">, </span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-number">3</span><span class="hl-brackets">]</span><span class="hl-code">, </span><span class="hl-var">$wp</span><span class="hl-brackets">[</span><span class="hl-number">4</span><span class="hl-brackets">]</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$vl</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LayoutVert</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$hl1</span><span class="hl-code">, </span><span class="hl-var">$hl2</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$vl</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div></div></div><p><br class="example-break"> </p><div class="figure"><a name="fig.windrose_layout_ex1"></a><p class="title"><b>Figure 21.18. Using layout classes to position 5 windrose plots <code class="uri"><a class="uri" href="example_src/windrose_layout_ex1.html" target="_top">(<code class="filename">windrose_layout_ex1.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/windrose_layout_ex1.png" alt="Using layout classes to position 5 windrose plots (windrose_layout_ex1.php)"></span> </div></div><p><br class="figure-break">
</p>
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