 <span class='kw'>%&gt;%</span>
  <span class='kw pkg'>dplyr</span><span class='kw ns'>::</span><span class='fu'><a href='https://dplyr.tidyverse.org/reference/mutate.html'>mutate</a></span>(<span class='kw'>route_id</span> <span class='kw'>=</span> <span class='fu'>id_variable</span>(<span class='no'>origin</span>, <span class='no'>destination</span>, <span class='kw'>.method</span> <span class='kw'>=</span> <span class='st'>"character"</span>))</div></pre>
  </div>
  <div class="col-md-3 hidden-xs hidden-