title: Power BI: Make a line chart continuous when source contains null values (handle missing values)
body: <p>This question spinned off a question I posted earlier;
  <a href="https://stackoverflow.com/questions/51360243/custom-x-axis-values-in-power-bi">Custom x-axis values in Power BI</a></p>
  
  <p>Suppose the following data set:</p>
  
  <p><a href="https://i.stack.imgur.com/LtDmC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LtDmC.png" alt="enter image description here"></a></p>
  
  <p>Focus on the second and third row. How can I make the line in corresponding graph hereunder be continuous and not stop in the middle? </p>
  
  <p><a href="https://i.stack.imgur.com/wHjyZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wHjyZ.png" alt="enter image description here"></a></p>
  
  <p>In Excel I used to solve this problem by applying NA() in a formula generating data for the graph. Is there a similar solution using DAX perhaps?</p>