Flutter图表绘制插件kg_charts的使用
Flutter图表绘制插件kg_charts的使用
kg_charts
kg_charts图标库。目前,只有雷达图。其他类型的图表可能会在以后添加。
开始
dependencies:
kg_charts: ^0.0.5
雷达图的效果如下:
使用示例:
RadarWidget(
skewing: 0,
radarMap: RadarMapModel(
legend: [
LegendModel('10/10', const Color(0XFF0EBD8D)),
LegendModel('10/11', const Color(0XFFEAA035)),
],
indicator: [
IndicatorModel("English", 100),
IndicatorModel("Physics", 100),
IndicatorModel("Chemistry", 100),
IndicatorModel("Biology", 100),
IndicatorModel("Politics", 100),
IndicatorModel("History", 100),
],
data: [
// MapDataModel([48,32.04,1.00,94.5,19,60,50,30,19,60,50]),
// MapDataModel([42.59,34.04,1.10,68,99,30,19,60,50,19,30]),
MapDataModel([100, 90, 90, 90, 10, 20]),
MapDataModel([90, 90, 90, 90, 10, 20]),
],
radius: 130,
duration: 2000,
shape: Shape.square,
maxWidth: 70,
line: LineModel(4),
),
textStyle: const TextStyle(color: Colors.black, fontSize: 14),
isNeedDrawLegend: true,
lineText: (p, length) => "${(p * 100 ~/ length)}%",
dilogText: (IndicatorModel indicatorModel, List<LegendModel> legendModels, List<double> mapDataModels) {
StringBuffer text = StringBuffer("");
for (int i = 0; i < mapDataModels.length; i++) {
text.write("${legendModels[i].name} : ${mapDataModels[i].toString()}");
if (i != mapDataModels.length - 1) {
text.write("\n");
}
}
return text.toString();
},
outLineText: (data, max) => "${data * 100 ~/ max}%",
)
更多关于Flutter图表绘制插件kg_charts的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html
1 回复
更多关于Flutter图表绘制插件kg_charts的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
kg_charts
是一个用于在 Flutter 应用中绘制图表的插件。它支持多种图表类型,如折线图、柱状图、饼图等,并且易于使用和定制。以下是如何在 Flutter 项目中使用 kg_charts
的基本步骤。
1. 添加依赖
首先,在 pubspec.yaml
文件中添加 kg_charts
依赖:
dependencies:
flutter:
sdk: flutter
kg_charts: ^latest_version
然后运行 flutter pub get
来安装依赖。
2. 导入库
在需要使用图表的 Dart 文件中导入 kg_charts
:
import 'package:kg_charts/kg_charts.dart';
3. 基本使用
折线图 (Line Chart)
以下是一个简单的折线图示例:
class LineChartExample extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return LineChart(
data: [
LineSeries(
name: 'Series 1',
color: Colors.blue,
dataPoints: [
DataPoint(x: 1, y: 10),
DataPoint(x: 2, y: 20),
DataPoint(x: 3, y: 30),
DataPoint(x: 4, y: 40),
],
),
LineSeries(
name: 'Series 2',
color: Colors.red,
dataPoints: [
DataPoint(x: 1, y: 20),
DataPoint(x: 2, y: 10),
DataPoint(x: 3, y: 40),
DataPoint(x: 4, y: 30),
],
),
],
xAxis: Axis(
label: 'X Axis',
showGrid: true,
),
yAxis: Axis(
label: 'Y Axis',
showGrid: true,
),
title: 'Line Chart Example',
);
}
}
柱状图 (Bar Chart)
以下是一个简单的柱状图示例:
class BarChartExample extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return BarChart(
data: [
BarSeries(
name: 'Series 1',
color: Colors.blue,
dataPoints: [
DataPoint(x: 'A', y: 10),
DataPoint(x: 'B', y: 20),
DataPoint(x: 'C', y: 30),
DataPoint(x: 'D', y: 40),
],
),
BarSeries(
name: 'Series 2',
color: Colors.red,
dataPoints: [
DataPoint(x: 'A', y: 20),
DataPoint(x: 'B', y: 10),
DataPoint(x: 'C', y: 40),
DataPoint(x: 'D', y: 30),
],
),
],
xAxis: Axis(
label: 'X Axis',
showGrid: true,
),
yAxis: Axis(
label: 'Y Axis',
showGrid: true,
),
title: 'Bar Chart Example',
);
}
}
饼图 (Pie Chart)
以下是一个简单的饼图示例:
class PieChartExample extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return PieChart(
data: [
PieSeries(
name: 'Series 1',
color: Colors.blue,
value: 30,
),
PieSeries(
name: 'Series 2',
color: Colors.red,
value: 20,
),
PieSeries(
name: 'Series 3',
color: Colors.green,
value: 50,
),
],
title: 'Pie Chart Example',
);
}
}