Charts 颤振哪个库在同一图形中提供堆叠条形图和折线图?
我想创建一个折线图和堆叠的颤振酒吧一起。有人知道我可以使用哪个图书馆吗?在图库中找不到它Charts 颤振哪个库在同一图形中提供堆叠条形图和折线图?,charts,flutter,Charts,Flutter,我想创建一个折线图和堆叠的颤振酒吧一起。有人知道我可以使用哪个图书馆吗?在图库中找不到它 谢谢。这似乎是颤振的最高评级软件包,可以处理这两种图形类型。不过,在堆栈溢出问题上要小心,因为这是一个意见问题 颤振图:通过使用顺序条-线组合图,我能够实现我所需要的 接下来,将分组类型更改为“charts.BarGroupingType.groupedStacked”,groupedStacked选项,并将条形图更改为堆叠条形图 条形图和折线图有两个纵轴,默认情况下,条形图只有一个主轴。您需要指定辅助轴
谢谢。这似乎是颤振的最高评级软件包,可以处理这两种图形类型。不过,在堆栈溢出问题上要小心,因为这是一个意见问题
颤振图:通过使用顺序条-线组合图,我能够实现我所需要的 接下来,将分组类型更改为“charts.BarGroupingType.groupedStacked”,groupedStacked选项,并将条形图更改为堆叠条形图 条形图和折线图有两个纵轴,默认情况下,条形图只有一个主轴。您需要指定辅助轴,否则将显示堆叠条形图和折线图的图表 声明->静态常量secondaryMeasureAxisId='secondaryMeasureAxisId' 并将“.setAttribute(charts.measureAxisIdKey,'secondaryMeasureAxisId')”添加到折线图中 最后,如果你有很多数据,超过30个像我的。横轴(域轴)下的文本将重叠。我找不到任何捷径来减少它。到目前为止,我使用的方法是声明一个新的域轴 在建:
final staticTicks = <charts.TickSpec<String>>[];
if(xxx){
staticTicks.add(xxx);
}
domainAxis: new charts.OrdinalAxisSpec(
tickProviderSpec:
new charts.StaticOrdinalTickProviderSpec(staticTicks)),
final staticTicks=[];
if(xxx){
添加(xxx);
}
domainAxis:新图表(
tickProviderSpec:
新图表。StaticOrdinalTickProviderSpec(staticTicks)),
我从中取出代码,并按照建议将其替换为charts.BarGroupingType.stacked
在我的案例中,我不需要指定次轴
/// Example of an ordinal combo chart with two series rendered as stacked bars, and a
/// third rendered as a line.
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.stacked),
// 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);
}
这就是结果
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
class HomePage extends StatefulWidget {
static const String id ='/StackedBarLineExample';
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
String myMessageText = '';
@override
Widget build(BuildContext context) {
//print ('logged in screen built');
return MaterialApp(
home: DefaultTabController(
length: 1,
initialIndex: int.parse(myLastSelectedPhase),
child: Scaffold(
appBar: AppBar(
backgroundColor: Colors.blue,
bottom: TabBar(
indicatorColor: Colors.white,
tabs: [
Tab(
icon: Icon(FontAwesomeIcons.chartBar)
),
],
),
title: Text('My Graph examples'),
),
body:
TabBarView(
children: [
Padding(
padding: EdgeInsets.all(8.0),
child: Container(
child: Center(
child: Column(
children: <Widget>[
Text(
'Stacked bar with line', style: TextStyle(
fontSize: 24.0, fontWeight: FontWeight.bold),),
Expanded(
child: OrdinalComboBarLineChart.withSampleData())
],
),
),
),
),
]
),
),
),
);
}
}