startAngle property
Starting angle of the series.
Defaults to 0.
Widget build(BuildContext context) {
   return Container(
       child: SfCircularChart(
           series: <PieSeries<ChartData, String>>[
               PieSeries<ChartData, String>(
                 startAngle: 270,
               ),
           ],
       )
   );
}
Implementation
final int startAngle;