ence/pipe.html">%&gt;%</a></span> </span>
<span>  <span class="fu"><a href="https://dplyr.tidyverse.org/reference/mutate.html" class="external-link">mutate</a></span><span class="op">(</span></span>
<span>    <span class="co"># Eliminate columns we no longer need</span></span>
<span>    Ledger.side <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>    Flow.aggregation.point <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>    Flow <span class="op">=</span> <span class=