>## column to hold variable</span></span>
<span id="cb27-6"><a href="get-started.html#cb27-6" tabindex="-1"></a>  <span class="at">values_to =</span> <span class="st">&quot;value&quot;</span>,          <span class="do">## column to hold values</span></span>
<span id="cb27-7"><a href="get-started.html#cb27-7" tabindex="-1"></a>  <span class="at">names_prefix =</span> <span class="st">&quot;metric_&quot;</span>      <span class="do">## adjust new variable names</span></span>
<span id="cb27-8"><a href="get-sta