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<title>MADlib: Graph Legend</title>
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   <div id="projectbrief">User Documentation for Apache MADlib</div>
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<div class="title">Graph Legend</div>  </div>
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<p>This page explains how to interpret the graphs that are generated by doxygen.</p>
<p>Consider the following example: </p><div class="fragment"><div class="line">/*! Invisible class because of truncation */</div><div class="line">class Invisible { };</div><div class="line"></div><div class="line">/*! Truncated class, inheritance relation is hidden */</div><div class="line">class Truncated : public Invisible { };</div><div class="line"></div><div class="line">/* Class not documented with doxygen comments */</div><div class="line">class Undocumented { };</div><div class="line"></div><div class="line">/*! Class that is inherited using public inheritance */</div><div class="line">class PublicBase : public Truncated { };</div><div class="line"></div><div class="line">/*! A template class */</div><div class="line">template&lt;class T&gt; class Templ { };</div><div class="line"></div><div class="line">/*! Class that is inherited using protected inheritance */</div><div class="line">class ProtectedBase { };</div><div class="line"></div><div class="line">/*! Class that is inherited using private inheritance */</div><div class="line">class PrivateBase { };</div><div class="line"></div><div class="line">/*! Class that is used by the Inherited class */</div><div class="line">class Used { };</div><div class="line"></div><div class="line">/*! Super class that inherits a number of other classes */</div><div class="line">class Inherited : public PublicBase,</div><div class="line">                  protected ProtectedBase,</div><div class="line">                  private PrivateBase,</div><div class="line">                  public Undocumented,</div><div class="line">                  public Templ&lt;int&gt;</div><div class="line">{</div><div class="line">  private:</div><div class="line">    Used *m_usedClass;</div><div class="line">};</div></div><!-- fragment --><p> This will result in the following graph:</p>
<center><iframe scrolling="no" frameborder="0" src="graph_legend.svg" width="683" height="212"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe> </center><p>The boxes in the above graph have the following meaning: </p>
<ul>
<li>
A filled gray box represents the struct or class for which the graph is generated. </li>
<li>
A box with a black border denotes a documented struct or class. </li>
<li>
A box with a gray border denotes an undocumented struct or class. </li>
<li>
A box with a red border denotes a documented struct or class forwhich not all inheritance/containment relations are shown. A graph is truncated if it does not fit within the specified boundaries. </li>
</ul>
<p>The arrows have the following meaning: </p>
<ul>
<li>
A dark blue arrow is used to visualize a public inheritance relation between two classes. </li>
<li>
A dark green arrow is used for protected inheritance. </li>
<li>
A dark red arrow is used for private inheritance. </li>
<li>
A purple dashed arrow is used if a class is contained or used by another class. The arrow is labelled with the variable(s) through which the pointed class or struct is accessible. </li>
<li>
A yellow dashed arrow denotes a relation between a template instance and the template class it was instantiated from. The arrow is labelled with the template parameters of the instance. </li>
</ul>
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