totalSumPredicate property
A boolean value, based on which the data point will be considered as total sum or not.
If this has true value, then that point will be considered as a total sum. Else if it has false, then it will be considered as a normal data point in chart.
This callback will be called for all the data points to check if the data is total sum.
Note: This is applicable only for waterfall chart.
Defaults to null
.
Widget build(BuildContext context) {
return SfCartesianChart(
series: <WaterfallSeries<SalesData, num>>[
WaterfallSeries<SalesData, num>(
dataSource: <SalesData>[
SalesData(2, 24, true),
SalesData(3, 22, true),
SalesData(4, 31, false),
],
xValueMapper: (SalesData sales, _) => sales.x,
yValueMapper: (SalesData sales, _) => sales.y,
totalSumPredicate: (SalesData data, _) => data.isTotalSum,
),
],
);
}
class SalesData {
SalesData(this.x, this.y, this.isTotalSum);
final num x;
final num y;
final bool isTotalSum;
}
Implementation
final ChartIndexedValueMapper<bool>? totalSumPredicate;