code>
data frame, regardless of the number of rows in it.</p>
<p>Secure in the knowledge that energy is conserved across all ECCs in
the <code>Energy</code> data frame, other analyses can proceed.</p>
</div>
<div class="section level3">
<h3 id="efficiencies">Efficiencies<a class="anchor" aria-label="anchor" href="#efficiencies"></a>
</h3>
<p>To further illustrate the power of <code>matsbyname</code> functions
in the context of <code>matsindf</code>, consider the calculation of the
efficiency of every indust