title: Weka filter that edits values
body: <p>Is there a filter I can apply that changes the values of a nominal attribute?</p>
  
  <p>Eg I have a fruit attribute, which can have values of apple, pear, banana, orange.  I want to change the possible values to tasty and horrible. I also want to change the values in my dataset, to be mapped corrrectly to these new possible categories.</p>
  
  <p>Basically I want a filter that can automatically do what you can do manually via the edit window.</p>