b10-1"><a href="get-started.html#cb10-1" tabindex="-1"></a>bikes<span class="sc">$</span>season_mix <span class="ot">&lt;-</span> <span class="fu">factor</span>(bikes<span class="sc">$</span>season, <span class="at">levels =</span> <span class="fu">c</span>(<span class="st">&quot;2&quot;</span>, <span class="st">&quot;0&quot;</span>, <span class="st">&quot;3&quot;</span>, <span class="st">&quot;1&quot;</span>))</span>
<span id="cb10-2"><a href="get-started.html#cb10-2" tabindex="-1"></a><span class="fu">lev