/pre></div>
</div>
<div class="section level2">
<h2 id="grouping-data">Grouping data<a class="anchor" aria-label="anchor" href="#grouping-data"></a>
</h2>
<p>To group the data key variable is <code>id</code>, which is a unique
16 digit code.</p>
<div class="sourceCode" id="cb13"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span></span>
<span><span class="va">artigos_publicados2</span> <span class="op">&lt;-</span> </span>
<span>    <span class="fu">dplyr</span><span class="fu">::</span><sp