title: How to sort likert heatmap by descending order of last column
body: <p>Using likert package to plot some likert scales. When plotting bars they are sorted by default. I need to sort the heatmap the same way but no success so far.
  As you can see heatmap is ordered by alphabetical text from questions.</p>
  
  <p>Using demo data &amp; code from package:</p>
  
  <pre><code># Reverse the levels
  items24.reverse &lt;- reverse.levels(items24)
  l24.reverse &lt;- likert(items24.reverse)
  plot(l24.reverse)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/0xNwN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0xNwN.png" alt="enter image description here"></a></p>
  
  <p>I want heatmap ordered like this:</p>
  
  <p><a href="https://i.stack.imgur.com/eYAJK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eYAJK.png" alt="enter image description here"></a></p>