'>TRUE</span>
  , <span class='kw'>legend</span> <span class='kw'>=</span> <span class='no'>T</span>
  , <span class='kw'>legend_options</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/list.html'>list</a></span>(
    <span class='kw'>stroke_from</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/list.html'>list</a></span>( <span class='kw'>title</span> <span class='kw'>=</span> <span class='st'>"Origin airport"</span> ),
    <span class='kw'>c