Partial

List<OrdinalData> ordinalDataList = [
    OrdinalData(domain: 'Mon', measure: 3, color: Colors.blue[300]),
    OrdinalData(domain: 'Tue', measure: 5, color: Colors.amber[300]),
    OrdinalData(domain: 'Wed', measure: 9, color: Colors.purple[300]),
    OrdinalData(domain: 'Thu', measure: 6.5, color: Colors.pink[300]),
];

AspectRatio(
    aspectRatio: 16 / 9,
    child: DChartPieO(
        data: ordinalDataList,
        configRenderPie: const ConfigRenderPie(
            arcLength: 3 / 2 * pi,
        ),
    ),
),