title: How to show Y axis ticks for every point in the graph
body: <p>I'm using chartjs to display some data but I'm in trouble with the Y axis visualization. I want at every point in the graph a value in the Y axis. Right now the Y axis display value in steps of 10.</p>
  
  <p>This is my actual yAxis configuration:</p>
  
  <pre><code>yAxes: [{
              position: "left",
              ticks: {
                  source:"data",
              } 
          }]
  </code></pre>
  
  <p>This is the actual chart. I would like to display in the Y axis only the actual value of the points displayed. In the X axis this configuration works, the time is aligned with the points. 
  <a href="https://i.stack.imgur.com/yNRMk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/yNRMk.png" alt="actual"></a></p>
  
  <p>Expected:</p>
  
  <p><a href="https://i.stack.imgur.com/7INoC.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7INoC.png" alt="expected"></a></p>