anic.fft</span>, what <span class="op">=</span> <span class="st">"roc"</span><span class="op">)</span></span></code></pre></div>
<div class="figure" style="text-align: center">
<img src="FFTrees_plot_files/figure-html/titanic-what-roc-1.png" alt="**Figure 4**: Performance comparison of FFTs in ROC space." width="550px"><p class="caption">
<strong>Figure 4</strong>: Performance comparison of FFTs in ROC space.
</p>
</div>
<ul>
<li>When the main options for <code>what</code> do not suffice, various
<code>show