weather_ds</span> <span class="op">&lt;-</span> <span class="va">flights.grp</span><span class="op">[[</span><span class="st">"weather"</span><span class="op">]</span><span class="op">]</span></span>
<span><span class="va">weather_ds_type</span> <span class="op">&lt;-</span> <span class="va">weather_ds</span><span class="op">$</span><span class="fu">get_type</span><span class="op">(</span><span class="op">)</span></span>
<span><span class="va">weather_ds_type</span><span class="op">$</span><span class="fu">