Hi Krishna,
Thanks for using Syncfusion product.
There is no documentation for drilldown sample. The drilldown for pie chart is achieved using the “pointRegionClick” event bind to each point of the chart. On clicking each pie slice, a pie chart is drawn using the “option” method of the ejChart. For your convenience we have created a sample , please find the sample from the attachment.
Online sample: http://js.syncfusion.com/demos/#!/azure/chart/User%20Interaction/DrillDown
Note: please refer the required script to run the sample.
Regards
Gowrimathi S
Attachment:
115818_d11497c0.zip