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<!DOCTYPE html> <html lang="en"> <head> <title>displayNet -- displays a chordal network using Graphivz</title> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> <link type="text/css" rel="stylesheet" href="../../../../Macaulay2/Style/doc.css"> <link rel="stylesheet" href="../../../../Macaulay2/Style/katex/katex.min.css"> <script defer="defer" src="../../../../Macaulay2/Style/katex/katex.min.js"></script> <script defer="defer" src="../../../../Macaulay2/Style/katex/contrib/auto-render.min.js"></script> <script> var macros = { "\\break": "\\\\", "\\ZZ": "\\mathbb{Z}", "\\NN": "\\mathbb{N}", "\\QQ": "\\mathbb{Q}", "\\RR": "\\mathbb{R}", "\\CC": "\\mathbb{C}", "\\PP": "\\mathbb{P}" }, delimiters = [ { left: "$$", right: "$$", display: true}, { left: "\\[", right: "\\]", display: true}, { left: "$", right: "$", display: false}, { left: "\\(", right: "\\)", display: false} ], ignoredTags = [ "kbd", "var", "samp", "script", "noscript", "style", "textarea", "pre", "code", "option" ]; document.addEventListener("DOMContentLoaded", function() { renderMathInElement(document.body, { delimiters: delimiters, macros: macros, ignoredTags: ignoredTags, trust: true }); }); </script> <style>.katex { font-size: 1em; }</style> <script defer="defer" src="../../../../Macaulay2/Style/katex/contrib/copy-tex.min.js"></script> <script defer="defer" src="../../../../Macaulay2/Style/katex/contrib/render-a11y-string.min.js"></script> <script src="../../../../Macaulay2/Style/prism.js"></script> <script>var current_version = '1.25.06';</script> <script src="../../../../Macaulay2/Style/version-select.js"></script> <link type="image/x-icon" rel="icon" href="../../../../Macaulay2/Style/icon.gif"> </head> <body> <div id="buttons"> <div> <a href="https://macaulay2.com/">Macaulay2</a> <span id="version-select-container"></span> » <a title="Macaulay2 documentation" href="../../Macaulay2Doc/html/index.html">Documentation </a> <br><a href="../../Macaulay2Doc/html/_packages_spprovided_spwith_sp__Macaulay2.html">Packages</a> » <span><a title="exploiting chordal structure in polynomial ideals" href="index.html">Chordal</a> :: <a title="displays a chordal network using Graphivz" href="_display__Net.html">displayNet</a></span> </div> <div class="right"> <form method="get" action="https://www.google.com/search"> <input placeholder="Search" type="text" name="q" value=""> <input type="hidden" name="q" value="site:macaulay2.com/doc"> </form> <a href="___Elim__Tree.html">next</a> | <a href="_display__Graph_lp__String_cm__String_cm__Elim__Tree_rp.html">previous</a> | <a href="___Elim__Tree.html">forward</a> | <a href="_display__Graph_lp__String_cm__String_cm__Elim__Tree_rp.html">backward</a> | up | <a href="master.html">index</a> | <a href="toc.html">toc</a> </div> </div> <hr> <div> <h1>displayNet -- displays a chordal network using Graphivz</h1> <ul> <li> <dl class="element"> <dt>Usage: </dt> <dd><code class="language-macaulay2">displayNet N</code></dd> <dd><code class="language-macaulay2">displayNet (label, N)</code></dd> <dd><code class="language-macaulay2">displayNet (dotFileName, jpgFileName, label, N)</code></dd> </dl> </li> <li>Inputs: <ul> <li><span><span class="tt">N</span>, <span>an instance of the type <a title="a chordal network" href="___Chordal__Net.html">ChordalNet</a></span></span></li> <li><span><span class="tt">label</span>, <span>a <a title="the class of all functions" href="../../Macaulay2Doc/html/___Function.html">function</a></span> (optional)</span></li> <li><span><span class="tt">dotFileName</span>, <span>a <a title="the class of all strings" href="../../Macaulay2Doc/html/___String.html">string</a></span> (optional)</span></li> <li><span><span class="tt">jpgFileName</span>, <span>a <a title="the class of all strings" href="../../Macaulay2Doc/html/___String.html">string</a></span> (optional)</span></li> </ul> </li> </ul> <div> <h2>Description</h2> Displays a chordal network using Graphviz.<br><br>The text displayed in each of the nodes can be provided by the optional input <span class="tt">label. </span>The default is <span class="tt">label:= net. </span><br><br> <h3>Example</h3> Consider the following chordal network. <table class="examples"> <tr> <td> <pre><code class="language-macaulay2">i1 : R = QQ[a..e,MonomialOrder=>Lex];</code></pre> </td> </tr> <tr> <td> <pre><code class="language-macaulay2">i2 : I = ideal {a*b, b*c, c*d, a*e, d*e}; o2 : Ideal of R</code></pre> </td> </tr> <tr> <td> <pre><code class="language-macaulay2">i3 : N = chordalNet I;</code></pre> </td> </tr> <tr> <td> <pre><code class="language-macaulay2">i4 : chordalTria N;</code></pre> </td> </tr> <tr> <td> <pre><code class="language-macaulay2">i5 : topComponents N;</code></pre> </td> </tr> <tr> <td> <pre><code class="language-macaulay2">i6 : N o6 = ChordalNet{ a => {a, } } b => {b, , b} c => { , c, c, } d => {d, , d} e => { , e} o6 : ChordalNet</code></pre> </td> </tr> </table> The command <span class="tt">displayNet N </span>outputs the following figure. <br> <p> <img src="../../../../Macaulay2/Chordal/network.jpg" alt="chordal network"> </p> </div> <div> <h2>Caveat</h2> If the function does not work, it might be the case that Graphviz is not installed, or that the package Graphs is not configured. See <a title="of the Chordal package" href="_installation_spand_spconfiguration.html">installation and configuration</a> </div> <div> <h2>See also</h2> <ul> <li><span><a title="digraph associated to a chordal network" href="_digraph_lp__Chordal__Net_rp.html">digraph(ChordalNet)</a> -- digraph associated to a chordal network</span></li> <li><span><a title="displays a digraph or graph using Graphviz" href="../../Graphs/html/_display__Graph.html">displayGraph</a> -- displays a digraph or graph using Graphviz</span></li> <li><span><a title="displays an elimination tree using Graphviz" href="_display__Graph_lp__String_cm__String_cm__Elim__Tree_rp.html">displayGraph(ElimTree)</a> -- displays an elimination tree using Graphviz</span></li> </ul> </div> <div> <div class="waystouse"> <h2>Ways to use <span class="tt">displayNet</span>:</h2> <ul> <li><kbd>displayNet(ChordalNet)</kbd></li> <li><kbd>displayNet(Function,ChordalNet)</kbd></li> <li><kbd>displayNet(String,String,Function,ChordalNet)</kbd></li> </ul> </div> <div class="waystouse"> <h2>For the programmer</h2> <p>The object <a title="displays a chordal network using Graphivz" href="_display__Net.html">displayNet</a> is <span>a <a title="a type of method function" href="../../Macaulay2Doc/html/___Method__Function.html">method function</a></span>.</p> </div> <hr> <div class="waystouse"> <p>The source of this document is in <span class="tt">Chordal/ChordalDoc.m2:691:0</span>.</p> </div> </div> </div> </body> </html>