 class='op'>{</span>
<span class='fu'><a href='https://rdrr.io/r/utils/data.html'>data</a></span><span class='op'>(</span><span class='va'>decoder</span><span class='op'>)</span>
<span class='va'>decoder</span>
<span class='op'>}</span>
</div><div class='output co'>#&gt;    CategoryField pollutantID                            Description
#&gt; 1          dayID           5                                Weekday
#&gt; 2          dayID           2                                Weekend
#&gt; 3   sourceTypeID  