hello, 
Hope someone can help me solve this issue. 
I have a request to include null value item on the packedbubble chart. 
Scenario: 
I have 10 cases in total, the calculation for the chart = no. of event / total .
There will be months that no event happen on certain cases, user request to shows NA in the chart instead of 0%. 
Is there any way i can include null value as a dataset in the packed bubble chart to shows the NA cases ? 
(http://file:///C:/Users/User/Desktop/packedbubble.png)