title: can't save clustering result to an arff file
body: <p>I'm using a java code to save clustering result to an arff file.. <br>
  I've followed the instructions in this site:
  <a href="http://weka.wikispaces.com/Visualizing+cluster+assignments" rel="nofollow">http://weka.wikispaces.com/Visualizing+cluster+assignments</a><br>
  but I get an error in the line:</p>
  
  <pre><code>    PlotData2D predData = ClustererPanel.setUpVisualizableInstances(train, eval);
  </code></pre>
  
  <p>saying that:</p>
  
  <pre><code>    The method setUpVisualizableInstances(Instances, ClusterEvaluation) is undefined for the type ClustererPanel
  </code></pre>
  
  <p>I've tried to google it but I couldn't find a solution</p>