<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>node_boundary — NetworkX 1.8.1 documentation</title> <link rel="stylesheet" href="../../_static/networkx.css" type="text/css" /> <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../', VERSION: '1.8.1', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: false }; </script> <script type="text/javascript" src="../../_static/jquery.js"></script> <script type="text/javascript" src="../../_static/underscore.js"></script> <script type="text/javascript" src="../../_static/doctools.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within NetworkX 1.8.1 documentation" href="../../_static/opensearch.xml"/> <link rel="top" title="NetworkX 1.8.1 documentation" href="../../index.html" /> <link rel="up" title="Boundary" href="../algorithms.boundary.html" /> <link rel="next" title="Centrality" href="../algorithms.centrality.html" /> <link rel="prev" title="edge_boundary" href="networkx.algorithms.boundary.edge_boundary.html" /> </head> <body> <div style="color: black;background-color: white; font-size: 3.2em; text-align: left; padding: 15px 10px 10px 15px"> NetworkX </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="../algorithms.centrality.html" title="Centrality" accesskey="N">next</a> |</li> <li class="right" > <a href="networkx.algorithms.boundary.edge_boundary.html" title="edge_boundary" accesskey="P">previous</a> |</li> <li><a href="http://networkx.github.com/">NetworkX Home </a> | </li> <li><a href="http://networkx.github.com/documentation.html">Documentation </a>| </li> <li><a href="http://networkx.github.com/download.html">Download </a> | </li> <li><a href="http://github.com/networkx">Developer (Github)</a></li> <li><a href="../index.html" >Reference</a> »</li> <li><a href="../pdf_reference.html" >Reference</a> »</li> <li><a href="../algorithms.html" >Algorithms</a> »</li> <li><a href="../algorithms.boundary.html" accesskey="U">Boundary</a> »</li> </ul> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="networkx.algorithms.boundary.edge_boundary.html" title="previous chapter">edge_boundary</a></p> <h4>Next topic</h4> <p class="topless"><a href="../algorithms.centrality.html" title="next chapter">Centrality</a></p> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="node-boundary"> <h1>node_boundary<a class="headerlink" href="#node-boundary" title="Permalink to this headline">¶</a></h1> <dl class="function"> <dt id="networkx.algorithms.boundary.node_boundary"> <tt class="descname">node_boundary</tt><big>(</big><em>G</em>, <em>nbunch1</em>, <em>nbunch2=None</em><big>)</big><a class="reference internal" href="../../_modules/networkx/algorithms/boundary.html#node_boundary"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#networkx.algorithms.boundary.node_boundary" title="Permalink to this definition">¶</a></dt> <dd><p>Return the node boundary.</p> <p>The node boundary is all nodes in the edge boundary of a given set of nodes that are in the set.</p> <table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">Parameters :</th><td class="field-body"><p class="first"><strong>G</strong> : graph</p> <blockquote> <div><p>A networkx graph</p> </div></blockquote> <p><strong>nbunch1</strong> : list, container</p> <blockquote> <div><p>Interior node set</p> </div></blockquote> <p><strong>nbunch2</strong> : list, container</p> <blockquote> <div><p>Exterior node set. If None then it is set to all of the nodes in G not in nbunch1.</p> </div></blockquote> </td> </tr> <tr class="field-even field"><th class="field-name">Returns :</th><td class="field-body"><p class="first"><strong>nlist</strong> : list</p> <blockquote class="last"> <div><p>List of nodes.</p> </div></blockquote> </td> </tr> </tbody> </table> <p class="rubric">Notes</p> <p>Nodes in nbunch1 and nbunch2 that are not in G are ignored.</p> <p>nbunch1 and nbunch2 are usually meant to be disjoint, but in the interest of speed and generality, that is not required here.</p> </dd></dl> </div> </div> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="../algorithms.centrality.html" title="Centrality" >next</a> |</li> <li class="right" > <a href="networkx.algorithms.boundary.edge_boundary.html" title="edge_boundary" >previous</a> |</li> <li><a href="http://networkx.github.com/">NetworkX Home </a> | </li> <li><a href="http://networkx.github.com/documentation.html">Documentation </a>| </li> <li><a href="http://networkx.github.com/download.html">Download </a> | </li> <li><a href="http://github.com/networkx">Developer (Github)</a></li> <li><a href="../index.html" >Reference</a> »</li> <li><a href="../pdf_reference.html" >Reference</a> »</li> <li><a href="../algorithms.html" >Algorithms</a> »</li> <li><a href="../algorithms.boundary.html" >Boundary</a> »</li> </ul> </div> <div class="footer"> © Copyright 2013, NetworkX Developers. 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