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How to bind data from the list to the Flutter Cartesian chart (SfCartesianChart) ?

Platform: Flutter |
Control: SfCartesianChart |
Published Date: May 11, 2021 |
Last Revised Date: May 11, 2021

The following steps explains how to bind the list of data to the SfCartesianChart widget.

 

Step 1: Define the data source that needs to be bind to the chart as in the below code snippet.

final List<_ChartData> chartData = <_ChartData>[
     _ChartData(2005, 21, 28),
     _ChartData(2006, 24, 44),
     _ChartData(2007, 36, 48),
     _ChartData(2008, 38, 50),
     _ChartData(2009, 54, 66),
     _ChartData(2010, 57, 78),
     _ChartData(2011, 70, 84)
  ];
 
// Class for data source.
class _ChartData {
  _ChartData(this.x, this.y, this.y2);
  final double x;
  final double y;
  final double y2;
}

 

Step 2: Define the SfCartesianChart widget with the required properties and bind the chartData to the chart as below.

SfCartesianChart(
 series: <LineSeries<_ChartData, num>>[
  LineSeries<_ChartData, num>(
    animationDuration: 2500,
    // Binding list data to the chart.
    dataSource: chartData,
    xValueMapper: (_ChartData sales, _) => sales.x,
    yValueMapper: (_ChartData sales, _) => sales.y,
   ),
  LineSeries<_ChartData, num>(
    animationDuration: 2500,
    // Binding list data to the chart.
    dataSource: chartData,
    xValueMapper: (_ChartData sales, _) => sales.x,
    yValueMapper: (_ChartData sales, _) => sales.y2,
  )
 ];
),

 

Thus, the data from the list is bound to the SfCartesianChart widget.

 

Binding list data to the chart.

 

View the sample in GitHub.

 

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