charts
Ordinal Bar Line Combo Chart Example
Example:
/// Example of an ordinal combo chart with two series rendered as bars, and a
/// third rendered as a line.
import 'package:flutter/material.dart';
import 'package:charts_flutter/flutter.dart' as charts;
class OrdinalComboBarLineChart extends StatelessWidget {
final List<charts.Series> seriesList;
final bool animate;
OrdinalComboBarLineChart(this.seriesList, {this.animate});
factory OrdinalComboBarLineChart.withSampleData() {
return new OrdinalComboBarLineChart(
_createSampleData(),
// Disable animations for image tests.
animate: false,
);
}
@override
Widget build(BuildContext context) {
return new charts.OrdinalComboChart(seriesList,
animate: animate,
// Configure the default renderer as a bar renderer.
defaultRenderer: new charts.BarRendererConfig(
groupingType: charts.BarGroupingType.grouped),
// Custom renderer configuration for the line series. This will be used for
// any series that does not define a rendererIdKey.
customSeriesRenderers: [
new charts.LineRendererConfig(
// ID used to link series to this renderer.
customRendererId: 'customLine')
]);
}
/// Create series list with multiple series
static List<charts.Series<OrdinalSales, String>> _createSampleData() {
final desktopSalesData = [
new OrdinalSales('2014', 5),
new OrdinalSales('2015', 25),
new OrdinalSales('2016', 100),
new OrdinalSales('2017', 75),
];
final tableSalesData = [
new OrdinalSales('2014', 5),
new OrdinalSales('2015', 25),
new OrdinalSales('2016', 100),
new OrdinalSales('2017', 75),
];
final mobileSalesData = [
new OrdinalSales('2014', 10),
new OrdinalSales('2015', 50),
new OrdinalSales('2016', 200),
new OrdinalSales('2017', 150),
];
return [
new charts.Series<OrdinalSales, String>(
id: 'Desktop',
colorFn: (_, __) => charts.MaterialPalette.blue.shadeDefault,
domainFn: (OrdinalSales sales, _) => sales.year,
measureFn: (OrdinalSales sales, _) => sales.sales,
data: desktopSalesData),
new charts.Series<OrdinalSales, String>(
id: 'Tablet',
colorFn: (_, __) => charts.MaterialPalette.red.shadeDefault,
domainFn: (OrdinalSales sales, _) => sales.year,
measureFn: (OrdinalSales sales, _) => sales.sales,
data: tableSalesData),
new charts.Series<OrdinalSales, String>(
id: 'Mobile ',
colorFn: (_, __) => charts.MaterialPalette.green.shadeDefault,
domainFn: (OrdinalSales sales, _) => sales.year,
measureFn: (OrdinalSales sales, _) => sales.sales,
data: mobileSalesData)
// Configure our custom line renderer for this series.
..setAttribute(charts.rendererIdKey, 'customLine'),
];
}
}
/// Sample ordinal data type.
class OrdinalSales {
final String year;
final int sales;
OrdinalSales(this.year, this.sales);
}