onRenderDetailsUpdate property
Callback which gets called while rendering the trendline.
Widget build(BuildContext context) {
return SfCartesianChart(
series: <CartesianSeries<ChartData,String>>[
LineSeries<ChartData,String>(
trendlines: <Trendline>[
Trendline(
onRenderDetailsUpdate: (TrendlineRenderParams args) {
print('Slope value: ' + args.slope![0].toString());
print('r-squared value: ' + args.rSquaredValue.toString());
print('Intercept value (x): ' + args.intercept.toString());
}
)
]
)
]
);
}
Implementation
final ChartTrendlineRenderCallback? onRenderDetailsUpdate;