Draw mean line in SfSparkLineChart

[husnain067]

how to draw a mean line with custom value in SfSparkLineChart.

[husnain067]

how to draw this grey line on custom value?

[husnain067]

class TestView extends StatefulWidget {
const TestView({Key? key}) : super(key: key);

@OverRide
_TestViewState createState() => _TestViewState();
}

class _TestViewState extends State {
final List data = const [
5.82,
5.88,
5.88,
5.88,
5.86,
5.86,
5.83,
5.8,
5.8,
5.81,
5.8,
5.81,
5.8,
5.86,
5.8,
5.8,
5.8,
5.8,
5.8,
5.8,
5.81,
5.81,
5.81,
5.75,
5.75,
5.75,
5.74,
5.74,
5.78,
5.75,
5.78,
5.78,
5.77,
5.77,
5.77,
5.76,
5.78,
5.78,
5.78,
5.79,
5.77,
5.75,
5.75,
5.75,
5.75
];
@OverRide
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: appColor,
body: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Center(
child: SizedBox(
width: 200,
height: 200,
child: SfSparkLineChart(
data: data,
axisCrossesAt: 5.50,
isInversed: false,
color: const Color(0xff31C48D),
axisLineColor: const Color(0xff484F58),
axisLineWidth: 3.5,
width: 3.0,
),
),
)
],
),
);
}
}``

[husnain067]

In above code there is some values in data List and i want to draw a custom horizontal line on custom value. and my graph is plot on that horizontal line accordingly data valises.
In above code i'm using axisCrossesAt: 5.50, so my grey line is drawn on 5.50 and the graph plot on this grey line but the grey line not changes accordingly custom values.

[husnain067]

how to draw this grey line on fixed custom values?