o">#&gt; [15]    b     c     b     b     a  NA(z)</span></span>
<span><span class="co">#&gt; Missing values: z</span></span>
<span><span class="co">#&gt;</span></span>
<span><span class="co">#&gt; Labels:</span></span>
<span><span class="co">#&gt;  value    label</span></span>
<span><span class="co">#&gt;      a     Left</span></span>
<span><span class="co">#&gt;      b   Middle</span></span>
<span><span class="co">#&gt;      c    Right</span></span>
<span><span class="co">#&gt;      z Apolitic</span></span