title: Kibana - plot count of unique words from @message field
body: <p>I am working in an environment with many different log files and many differently formatted log lines (100+) within each.  </p>
  
  <p>I have used grok extensively to reveal all kinds of exciting trends in these but I was wondering if there is a simple generic plot that could give me some insight into the frequency of words in any logfile? </p>
  
  <p>Is it possible in Kibana 4 beta 3 to plot a count of unique words from the @message field? (I'm not interested in any numbers, I work with bandwidths, frequencies which are constantly changing).</p>
  
  <p>Consider the following logfile:<br>
  29/01/2015 17:45:00 INFO Loading Banana 3218763kbs Retrieved - null /absy
  29/01/2015 17:45:01 DEBUG Apple Interrogation, Completed 25
  29/01/2015 17:45:02 EXCEPTION! Fruit rotting in 34 days
  29/01/2015 17:45:03 Critical word of the day is pineapple 123456789</p>
  
  <p>Imagine 200 more variations of the above.</p>
  
  <p>I would like to count each word returned by:</p>
  
  <p>cat logfile |cut -d" " -f3- |tr -d [0-9]</p>
  
  <p>i.e. remove the timestamp, delete the numbers and then count the frequency of each word.  A pie chart/count of common terms within a logfile I may never have seen before would be extremely useful:</p>
  
  <p>BANANA 788
  Help 692
  Exception 678
  Orange 53
  Retrieved 287</p>
  
  <p>I thought an aggregation of "significant terms" on the field "message" would help, but only if I can exclude any numbers, which it doesn't seem possible to do.</p>
  
  <p>Thanks!</p>