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<h1>Class eqGraph</h1>
<div class="description">
<p>Equation Graph</p>
<p>Fun class that requires the GD libraries to give visual output of an equation
to the user. Extends the eqEOS class.</p>
</div>
<dl class="tree">
<dd style="padding-left:0px">
<a href="class-eqEOS.html"><span>eqEOS</span></a>
</dd>
<dd style="padding-left:30px">
<img src="resources/inherit.png" alt="Extended by" />
<b><span>eqGraph</span></b>
</dd>
</dl>
<div class="info">
<b>Package:</b> <a href="package-Math.html">Math</a>\<a href="package-Math.EOS.html">EOS</a><br />
<b>Copyright:</b>
Copyright ©2005-2013 Jon Lawrence<br />
<b>License:</b>
<a href="http://opensource.org/licenses/LGPL-2.1">LGPL 2.1 License</a><br />
<b>Author:</b>
Jon Lawrence <<a
href="mailto:jlawrence11@gmail.com">jlawrence11@<!---->gmail.com</a>><br />
<b>Version:</b>
2.0<br />
<b>Located at</b> <a href="source-class-eqGraph.html#432-618" title="Go to source code">eos.class.php</a><br />
</div>
<table class="summary" id="methods">
<caption>Methods summary</caption>
<tr data-order="__construct" id="___construct">
<td class="attributes"><code>
public
</code>
</td>
<td class="name"><div>
<a class="anchor" href="#___construct">#</a>
<code><a href="source-class-eqGraph.html#451-466" title="Go to source code">__construct</a>( <span>Integer <var>$width</var> = <span class="php-num">640</span></span>, <span>Integer <var>$height</var> = <span class="php-num">480</span></span> )</code>
<div class="description short">
<p>Constructor</p>
</div>
<div class="description detailed hidden">
<p>Constructor</p>
<p>Sets up the Graph class with an image width and height defaults to
640x480</p>
<h4>Parameters</h4>
<div class="list"><dl>
<dt><var>$width</var></dt>
<dd><code>Integer</code><br>$width Image width</dd>
<dt><var>$height</var></dt>
<dd><code>Integer</code><br>$height Image height</dd>
</dl></div>
<h4>Overrides</h4>
<div class="list"><code><a href="class-eqEOS.html#___construct">eqEOS::__construct()</a></code></div>
</div>
</div></td>
</tr>
<tr data-order="graph" id="_graph">
<td class="attributes"><code>
public
Null
</code>
</td>
<td class="name"><div>
<a class="anchor" href="#_graph">#</a>
<code><a href="source-class-eqGraph.html#469-574" title="Go to source code">graph</a>( <span>String <var>$eq</var></span>, <span>Integer <var>$xLow</var></span>, <span>Integer <var>$xHigh</var></span>, <span>Float <var>$xStep</var></span>, <span>Boolean <var>$xyGrid</var> = <span class="php-keyword1">false</span></span>, <span>Boolean <var>$yGuess</var> = <span class="php-keyword1">true</span></span>, <span>Integer <var>$yLow</var> = <span class="php-keyword1">false</span></span>, <span>Integer <var>$yHigh</var> = <span class="php-keyword1">false</span></span> )</code>
<div class="description short">
<p>Create GD Graph Image</p>
</div>
<div class="description detailed hidden">
<p>Create GD Graph Image</p>
<p>Creates a GD image based on the equation given with the parameters that are
set</p>
<h4>Parameters</h4>
<div class="list"><dl>
<dt><var>$eq</var></dt>
<dd><code>String</code><br>$eq Equation to use. Needs variable in equation to create graph, all variables
are interpreted as 'x'</dd>
<dt><var>$xLow</var></dt>
<dd><code>Integer</code><br>$xLow Lower x-bound for graph</dd>
<dt><var>$xHigh</var></dt>
<dd><code>Integer</code><br>$xHigh Upper x-bound for graph</dd>
<dt><var>$xStep</var></dt>
<dd><code>Float</code><br>$xStep Stepping points while solving, the lower, the better precision. Slow if
lower than .01</dd>
<dt><var>$xyGrid</var></dt>
<dd><code>Boolean</code><br>$xyGrid Draw gridlines?</dd>
<dt><var>$yGuess</var></dt>
<dd><code>Boolean</code><br>$yGuess Guess the upper/lower yBounds?</dd>
<dt><var>$yLow</var></dt>
<dd><code>Integer</code><br>$yLow Lower y-bound</dd>
<dt><var>$yHigh</var></dt>
<dd><code>Integer</code><br>$yHigh Upper y-bound</dd>
</dl></div>
<h4>Returns</h4>
<div class="list">
<code>Null</code><br />
</div>
</div>
</div></td>
</tr>
<tr data-order="outJPG" id="_outJPG">
<td class="attributes"><code>
public
</code>
</td>
<td class="name"><div>
<a class="anchor" href="#_outJPG">#</a>
<code><a href="source-class-eqGraph.html#576-584" title="Go to source code">outJPG</a>( )</code>
<div class="description short">
<p>Sends JPG to browser</p>
</div>
<div class="description detailed hidden">
<p>Sends JPG to browser</p>
<p>Sends a JPG image with proper header to output</p>
</div>
</div></td>
</tr>
<tr data-order="outPNG" id="_outPNG">
<td class="attributes"><code>
public
</code>
</td>
<td class="name"><div>
<a class="anchor" href="#_outPNG">#</a>
<code><a href="source-class-eqGraph.html#586-594" title="Go to source code">outPNG</a>( )</code>
<div class="description short">
<p>Sends PNG to browser</p>
</div>
<div class="description detailed hidden">
<p>Sends PNG to browser</p>
<p>Sends a PNG image with proper header to output</p>
</div>
</div></td>
</tr>
<tr data-order="getImage" id="_getImage">
<td class="attributes"><code>
public
Resource
</code>
</td>
<td class="name"><div>
<a class="anchor" href="#_getImage">#</a>
<code><a href="source-class-eqGraph.html#596-606" title="Go to source code">getImage</a>( )</code>
<div class="description short">
<p>Output GD Image</p>
</div>
<div class="description detailed hidden">
<p>Output GD Image</p>
<p>Will give the developer the GD resource for the graph that can be used to
store the graph to the FS or other media</p>
<h4>Returns</h4>
<div class="list">
<code>Resource</code><br>GD Image Resource<br />
</div>
</div>
</div></td>
</tr>
<tr data-order="outGD" id="_outGD">
<td class="attributes"><code>
public
Resource
</code>
</td>
<td class="name"><div>
<a class="anchor" href="#_outGD">#</a>
<code><a href="source-class-eqGraph.html#608-617" title="Go to source code">outGD</a>( )</code>
<div class="description short">
<p>Output GD Image</p>
</div>
<div class="description detailed hidden">
<p>Output GD Image</p>
<p>Alias for eqGraph::getImage()</p>
<h4>Returns</h4>
<div class="list">
<code>Resource</code><br>GD Image resource<br />
</div>
</div>
</div></td>
</tr>
</table>
<table class="summary inherited">
<caption>Methods inherited from <a href="class-eqEOS.html#methods">eqEOS</a></caption>
<tr>
<td><code>
<a href="class-eqEOS.html#_in2post">in2post()</a>,
<a href="class-eqEOS.html#_solveIF">solveIF()</a>,
<a href="class-eqEOS.html#_solvePF">solvePF()</a>
</code></td>
</tr>
</table>
<table class="summary inherited">
<caption>Properties inherited from <a href="class-eqEOS.html#properties">eqEOS</a></caption>
<tr>
<td><code>
<a href="class-eqEOS.html#$FNC"><var>$FNC</var></a>,
<a href="class-eqEOS.html#$SEP"><var>$SEP</var></a>,
<a href="class-eqEOS.html#$SGL"><var>$SGL</var></a>,
<a href="class-eqEOS.html#$ST"><var>$ST</var></a>,
<a href="class-eqEOS.html#$ST1"><var>$ST1</var></a>,
<a href="class-eqEOS.html#$ST2"><var>$ST2</var></a>
</code></td>
</tr>
</table>
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