<span class="op">(</span>add<span class="op">=</span><span class="fl">0.2</span><span class="op">)</span><span class="op">)</span></span></code></pre></div>
<p><img src="reference/figures/titanic-1.png" alt="Parallel coordinate plot of titanic data. The four categorical variables Class, Sex, Age, and Survived, are plotted along the x axis. The observations within each of the levels are plotted in lines stacked on top of one another. This creates the impression that the line segments form a single band betwe