lass="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">smooth_lss</span><span class="op">(</span></span>
<span>  <span class="va">x</span>,</span>
<span>  lss_var <span class="op">=</span> <span class="st">"fit"</span>,</span>
<span>  date_var <span class="op">=</span> <span class="st">"date"</span>,</span>
<span>  span <span class="op">=</span> <span class="fl">0.1</span>,</span>
<span>  group <span class="op">=</span