ts</code> data as in the <em>“Introduction to data.table”</em> vignette.</p>
<div class="sourceCode" id="cb1"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true"></a>flights &lt;-<span class="st"> </span><span class="kw">fread</span>(<span class="st">&quot;flights14.csv&quot;</span>)</span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true"></a>flights</span>
<span id="cb1-3"><a href="#cb1-3" aria-hidden="true"></a><span class="co">#         year m