.PI/<span class="hljs-number">2</span>],
    zoomable: <span class="hljs-literal">true</span>,

    layers: [
        <span class="hljs-keyword">new</span> c3.Polar.Layer.Pie&lt;PolarPlotDatum&gt;({
            key: <span class="hljs-function">(<span class="hljs-params">d</span>) =&gt;</span> d.id,
            value: <span class="hljs-function">(<span class="hljs-params">d</span>) =&gt;</span> d.value,
            sort: <span class="hljs-literal">false</span>,</pre></div></div>
            
        </li>
  