100% Stacked column in Flutter Cartesian Charts (SfCartesianChart)

11 Apr 202210 minutes to read

To create a Flutter 100% stacked column chart quickly, you can check this video.

To render a 100% stacked column chart, create an instance of StackedColumn100Series, and add it to the series collection property of SfCartesianChart. The following properties can be used to customize the appearance:

  • color - changes the color of the series.
  • opacity - controls the transparency of the chart series.
  • borderWidth - changes the stroke width of the series.
  • borderColor - changes the stroke color of the series.
  • borderRadius - used to add the rounded corners to the rectangle.
@override
    Widget build(BuildContext context) {
        return Scaffold(
            body: Center(
                child: Container(
                    child: SfCartesianChart(
                        primaryXAxis: CategoryAxis(),
                        series: <ChartSeries>[
                            StackedColumn100Series<ChartData, String>(
                                dataSource: chartData,
                                xValueMapper: (ChartData data, _) => data.x,
                                yValueMapper: (ChartData data, _) => data.y
                            ),
                            StackedColumn100Series<ChartData, String>(
                                dataSource: chartData,
                                xValueMapper: (ChartData data, _) => data.x,
                                yValueMapper: (ChartData data, _) => data.y2
                            ),
                            StackedColumn100Series<ChartData, String>(
                                dataSource: chartData,
                                xValueMapper: (ChartData data, _) => data.x,
                                yValueMapper: (ChartData data, _) => data.y3
                            ),
                            StackedColumn100Series<ChartData, String>(
                                dataSource: chartData,
                                xValueMapper: (ChartData data, _) => data.x,
                                yValueMapper: (ChartData data, _) => data.y4
                            )
                        ]
                    )
                )      
            )
        );
    }

Stacked 100 column chart

Column width and spacing

The spacing property is used to change the spacing between two segments. The default value of spacing is 0, and the value ranges from 0 to 1. Here, 1 and 0 correspond to 100% and 0% of the available space, respectively.

The width property is used to change the width of the rectangle. The default value of the width is 0.7, and the value ranges from 0 to 1. Here, 1 and 0 correspond to 100% and 0% of the available width, respectively.

@override
    Widget build(BuildContext context) {
        return Scaffold(
            body: Center(
                child: Container(
                    child: SfCartesianChart(
                        primaryXAxis: CategoryAxis(),
                        series: <ChartSeries>[
                            StackedColumn100Series<ChartData, String>(
                                dataSource: chartData,
                                xValueMapper: (ChartData data, _) => data.x,
                                yValueMapper: (ChartData data, _) => data.y,
                                width: 0.8, // Width of the columns
                                spacing: 0.2 // Spacing between the columns
                            ),
                            StackedColumn100Series<ChartData, String>(
                                dataSource: chartData,
                                xValueMapper: (ChartData data, _) => data.x,
                                yValueMapper: (ChartData data, _) => data.y2,
                                width: 0.8, // Width of the columns
                                spacing: 0.2 // Spacing between the columns
                            )
                        ]
                    )
                )   
            )
        );
    }

Stacked 100 column width and spacing

See Also