Levels

Sunburst chart is used to display hierarchical data. You can add more than one hierarchical data by using the Levels property of Sunburst chart. Each level of the hierarchy is represented by circle.
The following code snippet illustrates

JS

@(Html.EJ().SunburstChart("chartContainer")

       .Levels(
         //.. to add the hierarchical levels 
                      })
 )

GroupMemberPath

It is the string property that is used to map the group category value in the dataSource .
You can define the levels as shown in the below code example

JS

@(Html.EJ().SunburstChart("chartContainer")

       .Levels(
         //.. to add the hierarchical levels 
         lv.GroupMemberPath("Level1").Add();
                        lv.GroupMemberPath("Level2").Add();
                        lv.GroupMemberPath("Level3").Add();
                      })
 )

The following screenshot illustrates the Sunburst Chart with different levels