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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
<title>Dot 画图常用语法 — Feng's blog 1.0 documentation</title>
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</head><body>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<section id="dot-hua-tu-chang-yong-yu-fa">
<h1>Dot 画图常用语法<a class="headerlink" href="#dot-hua-tu-chang-yong-yu-fa" title="Permalink to this headline">¶</a></h1>
<section id="you-xiang-tu">
<h2>有向图<a class="headerlink" href="#you-xiang-tu" title="Permalink to this headline">¶</a></h2>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">digraph</span> <span class="p">{</span>
<span class="n">a</span> <span class="o">-></span> <span class="n">b</span>
<span class="p">}</span>
</pre></div>
</div>
<img alt="_images/dot-digraph.png" src="_images/dot-digraph.png" />
</section>
<section id="wu-xiang-tu">
<h2>无向图<a class="headerlink" href="#wu-xiang-tu" title="Permalink to this headline">¶</a></h2>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">graph</span> <span class="p">{</span>
<span class="n">a</span> <span class="o">--</span> <span class="n">b</span>
<span class="p">}</span>
</pre></div>
</div>
<img alt="_images/dot-graph.png" src="_images/dot-graph.png" />
</section>
<section id="tu-shu-xing">
<h2>图属性<a class="headerlink" href="#tu-shu-xing" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">label="My</span> <span class="pre">Graph"</span></code> 给图添加标题。</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">rankdir=LR</span></code> 默认图为上下布局，修改为左右布局。</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">{rank=same;</span> <span class="pre">a,</span> <span class="pre">b,</span> <span class="pre">c</span> <span class="pre">}</span></code> 将 a, b, c 画到同一个层级上</p></li>
</ul>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">digraph</span> <span class="p">{</span>
<span class="n">label</span><span class="o">=</span><span class="s2">"xyz"</span>
<span class="n">rankdir</span><span class="o">=</span><span class="n">LR</span>
<span class="p">{</span><span class="n">rank</span><span class="o">=</span><span class="n">same</span><span class="p">;</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">}</span>
<span class="n">a</span> <span class="o">-></span> <span class="n">b</span>
<span class="n">b</span> <span class="o">-></span> <span class="n">c</span>
<span class="p">}</span>
</pre></div>
</div>
<img alt="_images/dot-graph-attrs.png" src="_images/dot-graph-attrs.png" />
</section>
<section id="jie-dian-shu-xing">
<h2>节点属性<a class="headerlink" href="#jie-dian-shu-xing" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">label="XXX"</span></code> 修改节点中的文字内容</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">color=red</span></code> 修改节点边框 <a class="reference external" href="http://graphviz.org/doc/info/colors.html">颜色</a></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">style=filled,</span> <span class="pre">fillcolor=yellow</span></code> 给节点添加填充色</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">shape</span></code> <a class="reference external" href="http://graphviz.org/doc/info/shapes.html">节点形状</a></p></li>
</ul>
</section>
<section id="bian-shu-xing">
<h2>边属性<a class="headerlink" href="#bian-shu-xing" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">label="XXX"</span></code> 给边添加说明信息</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">color=red</span></code> 修改边 <a class="reference external" href="http://graphviz.org/doc/info/colors.html">颜色</a></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">penwidth=2.0</span></code> 修改边宽度</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">style=dotted</span></code> 修改边的样式</p></li>
</ul>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">graph</span> <span class="p">{</span>
<span class="n">rankdir</span><span class="o">=</span><span class="n">LR</span>
<span class="n">a</span> <span class="p">[</span><span class="n">label</span><span class="o">=</span><span class="s2">"Foo"</span><span class="p">]</span>
<span class="n">b</span> <span class="p">[</span><span class="n">shape</span><span class="o">=</span><span class="n">box</span><span class="p">,</span> <span class="n">style</span><span class="o">=</span><span class="n">filled</span><span class="p">,</span> <span class="n">fillcolor</span><span class="o">=</span><span class="n">yellow</span><span class="p">]</span>
<span class="n">a</span> <span class="o">--</span> <span class="n">b</span> <span class="o">--</span> <span class="n">c</span> <span class="p">[</span><span class="n">color</span><span class="o">=</span><span class="n">blue</span><span class="p">]</span>
<span class="n">b</span> <span class="o">--</span> <span class="n">d</span> <span class="p">[</span><span class="n">style</span><span class="o">=</span><span class="n">dotted</span><span class="p">]</span>
<span class="p">}</span>
</pre></div>
</div>
<img alt="_images/dot-node-attrs.png" src="_images/dot-node-attrs.png" />
<p>常见的节点和边样式属性：</p>
<img alt="_images/dot-style.png" src="_images/dot-style.png" />
</section>
<section id="record-jie-dian">
<h2>Record 节点<a class="headerlink" href="#record-jie-dian" title="Permalink to this headline">¶</a></h2>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">digraph</span> <span class="n">structs</span> <span class="p">{</span>
<span class="n">node</span> <span class="p">[</span><span class="n">shape</span><span class="o">=</span><span class="n">record</span><span class="p">];</span>
<span class="n">struct1</span> <span class="p">[</span><span class="n">shape</span><span class="o">=</span><span class="n">record</span><span class="p">,</span><span class="n">label</span><span class="o">=</span><span class="s2">"<f0> left|<f1> middle|<f2> right"</span><span class="p">];</span>
<span class="n">struct2</span> <span class="p">[</span><span class="n">shape</span><span class="o">=</span><span class="n">record</span><span class="p">,</span><span class="n">label</span><span class="o">=</span><span class="s2">"<f0> one|<f1> two"</span><span class="p">];</span>
<span class="n">struct3</span> <span class="p">[</span><span class="n">shape</span><span class="o">=</span><span class="n">record</span><span class="p">,</span><span class="n">label</span><span class="o">=</span><span class="s2">"hello</span><span class="se">\n</span><span class="s2">world |{ b |{c|<here> d|e}| f}| g | h"</span><span class="p">];</span>
<span class="n">struct1</span><span class="p">:</span><span class="n">f1</span> <span class="o">-></span> <span class="n">struct2</span><span class="p">:</span><span class="n">f0</span><span class="p">;</span>
<span class="n">struct1</span><span class="p">:</span><span class="n">f2</span> <span class="o">-></span> <span class="n">struct3</span><span class="p">:</span><span class="n">here</span><span class="p">;</span>
<span class="n">struct2</span> <span class="o">-></span> <span class="n">struct3</span>
<span class="p">}</span>
</pre></div>
</div>
<img alt="_images/dot-record.png" src="_images/dot-record.png" />
</section>
<section id="ming-ling-xing-can-shu">
<h2>命令行参数<a class="headerlink" href="#ming-ling-xing-can-shu" title="Permalink to this headline">¶</a></h2>
<p>将图源码保存为 <code class="docutils literal notranslate"><span class="pre">input.dot</span></code> 文件，执行以下命令生成 png 图：</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>dot -Tpng -o output.png input.dot
</pre></div>
</div>
</section>
</section>
</div>
</div>
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<h3><a href="index.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Dot 画图常用语法</a><ul>
<li><a class="reference internal" href="#you-xiang-tu">有向图</a></li>
<li><a class="reference internal" href="#wu-xiang-tu">无向图</a></li>
<li><a class="reference internal" href="#tu-shu-xing">图属性</a></li>
<li><a class="reference internal" href="#jie-dian-shu-xing">节点属性</a></li>
<li><a class="reference internal" href="#bian-shu-xing">边属性</a></li>
<li><a class="reference internal" href="#record-jie-dian">Record 节点</a></li>
<li><a class="reference internal" href="#ming-ling-xing-can-shu">命令行参数</a></li>
</ul>
</li>
</ul>
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