ker.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>Template for a double decker plot.
A double decker plot is composed of a sequence of spines in the same
direction, with the final spine in the opposite direction.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">ddecker</span><span class="op">(</s