title: creating a tableau pie chart with no measures data
body: <p>I have a table (as seen in link below), that has a system assessment that we conduct every year. The assessment is a series of 4 questions (or as we call them 'attributes') and there is only 3 possible outcomes.</p>
  <p><a href="https://i.stack.imgur.com/FXIQE.png" rel="nofollow noreferrer">Table</a></p>
  <p>Using Tableau, I'd like to have the system as a filter (easy to do), and for each attribute build a pie chart. There are no measures that I capturing.</p>
  <p>Any thoughts on how to do this?</p>
  <p>Thanks.</p>