rerendered book

docs/index.html

@@ -205,6 +205,12 @@
   <a href="./noj_book.more_visualization.html" class="sidebar-item-text sidebar-link">
  <span class="menu-text"><span class="chapter-number">11</span>&nbsp; <span class="chapter-title">More visualization examples (experimental 🛠)</span></span></a>
   </div>
+</li>
+        <li class="sidebar-item">
+  <div class="sidebar-item-container"> 
+  <a href="./noj_book.visualizing_correlation_matrices.html" class="sidebar-item-text sidebar-link">
+ <span class="menu-text"><span class="chapter-number">12</span>&nbsp; <span class="chapter-title">Visualizing correlation matrices (experimental 🛠) - DRAFT</span></span></a>
+  </div>
 </li>
     </ul>
     </div>
@@ -280,6 +286,7 @@ <h2 data-number="1.2" class="anchored" data-anchor-id="existing-chapters-in-this
 <li><p><a href="noj_book.visualization.html">Visualization (experimental 🛠)</a></p></li>
 <li><p><a href="noj_book.statistical_visualization.html">Statistical Visualization (experimental 🛠)</a></p></li>
 <li><p><a href="noj_book.more_visualization.html">More visualization examples (experimental 🛠)</a></p></li>
+<li><p><a href="noj_book.visualizing_correlation_matrices.html">Visualizing correlation matrices (experimental 🛠) - DRAFT</a></p></li>
 </ul>
 <div class="sourceClojure">
 <div class="sourceCode" id="cb1"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>(<span class="kw">comment</span></span>