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<h1 class="title">Directed Acyclic Graphs (DAG)</h1>
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<p>We’re going to do an exercise to draw a DAG.</p>
<p>We’re going to use <a href="https://cran.r-project.org/web/packages/ggdag/vignettes/intro-to-ggdag.html">ggdag</a>. Make sure you have the necessary packages installed.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb1"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(dagitty)</span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(ggdag)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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<pre><code>
Attaching package: 'ggdag'</code></pre>
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<div class="cell-output cell-output-stderr">
<pre><code>The following object is masked from 'package:stats':
filter</code></pre>
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<div class="sourceCode cell-code" id="cb4"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(ggplot2)</span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a>dag <span class="ot"><-</span> <span class="fu">dagitty</span>(<span class="st">"dag{y <- z -> x}"</span>)</span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="fu">ggdag</span>(dag, <span class="at">layout =</span> <span class="st">"circle"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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<p><img src="DAG_files/figure-html/unnamed-chunk-1-1.png" class="img-fluid" width="672"></p>
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