initialChartData property
The data used to build the chart displayed when the widget is first placed. Each CircularStackEntry in the list defines an individual stack of data: For a Pie chart that corresponds to individual slices in the chart. For a Radial chart it corresponds to individual segments on the same arc.
If length > 1 and chartType is CircularChartType.radial then the stacks will be grouped together as concentric circles.
If chartType is CircularChartType.pie then length cannot be > 1.
Implementation
final List<CircularStackEntry>? initialChartData;