p>
<div class="sourceCode" id="cb5"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb5-1"><a href="#cb5-1"></a>input &lt;-<span class="st"> </span><span class="kw"><a href="https://Rdatatable.gitlab.io/data.table/reference/data.table.html">data.table</a></span>(<span class="dt">income =</span> income)</span>
<span id="cb5-2"><a href="#cb5-2"></a>tax_table2 &lt;-<span class="st"> </span><span class="kw"><a href="https://Rdatatable.gitlab.io/data.table/reference/copy.html">copy</a></span>(grat