title: With nvd3.js/d3.js, how can you have a scatter or line chart with discrete/non-numeric/non-time-series X-Axis values?
body: <p>For example, I want a scatter chart that looks like:</p>
  
  <pre><code>   100|        X                                           o
        |                                      o
      60|
        |        o             X               X                 
      40|
        |
      20|                      o                             X
        |
       0|______________________________________________________________
               Apples        Carrots        Dragons        Monkies      
  </code></pre>
  
  <p>Where X and o are different sets of data</p>