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

Platform: Flutter |
Control: SfCartesianChart

The following steps explains how to bind the array data source to the SfCartesianChart widget.


Step 1: Declare and define the two integer arrays with the required data for the x and y values of the chart, and a variable data of list type with user-defined class(_SalesData) to bind to the chart as in the below code snippet.

List<_SalesData> data = <_SalesData>[];
List<int> xValues = [1, 2, 3, 4, 5];
List<int> yValues = [35, 28, 34, 32, 40];
//Class which is used as type for the data source.
class _SalesData {
  _SalesData(this.xValue, this.yValue);
  final int xValue;
  final int yValue;


Step 2: In the intState() call the getData method.

void initState() {
 // Calling getData method to add data to the list


Step 3: Define the getData() method which loops the integer array and add them into the data list.

void getData() {
  for (int i = 0; i < xValues.length; i++) {
    // Adding data to the user-defined type list.
    data.add(_SalesData(xValues[i], yValues[i]));


Step 4: Define the SfCartesianChart widget with the required properties and bind the data to the chart as below.

  series: <ChartSeries<_SalesData, int>>[
    LineSeries<_SalesData, int>(
     // Binding the data to the chart.
      dataSource: data,
      xValueMapper: (_SalesData sales, _) => sales.xValue,
      yValueMapper: (_SalesData sales, _) => sales.yValue,
      name: 'Sales'


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

bind array data to the chart


View the sample in GitHub.

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