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

HTML

<ej:SunburstChart  ID="container" runat="server" >
<Levels>
  <%--To Add Multiple levels for reprsenting the hierarchical data   --%>
</Levels>  
</ej:SunburstChart>

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

HTML

<ej:SunburstChart  ID="container" runat="server" >
<Levels>
                <ej:SunburstLevel GroupMemberPath="Level1"></ej:SunburstLevel>
                <ej:SunburstLevel GroupMemberPath="Level2"></ej:SunburstLevel>
                <ej:SunburstLevel GroupMemberPath="Level3"></ej:SunburstLevel>
              
            </Levels>  
</ej:SunburstChart>

The following screenshot illustrates the Sunburst Chart with different levels