我已经完成了20多个关于echarts的教程。今天开始和大家分享一个新的开源项目的教程。
I've completed more than 20 tutorials about echarts. Today I started to share a tutorial on a new open source project.
Summary:
G2 is a set of graphically-based graphical syntax that is data-driven and highly user-friendly and extensible, allowing users to build a wide variety of interactive statistics without having to worry about detailed implementation details chart.
G2 是一套基于可视化编码的图形语法，以数据驱动，具有高度的易用性和扩展性，用户无需关注各种繁琐的实现细节，一条语句即可构建出各种各样的可交互的统计图表。
您将从这个教程中学到什么
- 如何引入js文件
- 如何定义容器
- 如何定义数据
- 如何引用数据
- 如何定义提示框
- 如何渲染图表
学习此教程的必备条件
教程难度
- 容易
教程内容
演示效果
1. 知识点A - 如何引入js文件
<script src="./js/g2.min.js"></script>
<script src="./js/data-set.min.js"></script>
使用内嵌对js文件进行引入，用于后期图表使用。
2. 知识点B - 如何定义容器
<div id="zhexiantu"></div>
使用定义容器，用于展示图表。容器名：zhexiantu。
3. 知识点C - 如何定义数据
const data = [
{ year: '2001', yearValue: 3 },
{ year: '2002', yearValue: 4 },
{ year: '2003', yearValue: 3.5 },
{ year: '2004', yearValue: 5 },
{ year: '2005', yearValue: 4.9 },
{ year: '2006', yearValue: 6 },
{ year: '2007', yearValue: 7 },
{ year: '2008', yearValue: 9 },
{ year: '2009', yearValue: 13 }
];
- data：使用数组形式定义数据。
- 格式：{名称:'对应值',名称:对应值}
4. 知识点D - 如何引用数据
const chart = new G2.Chart({
container: 'zhexiantu',
forceFit: true,
height: window.innerHeight
});
chart.source(data);
chart.scale('yearValue', {
min: 0
});
chart.scale('year', {
range: [ 0 , 1 ]
});
- container：定于数据从zhexiantu数组取值。
- forceFit: 定义图表的宽度自适应开关，默认为 false，设置为 true 时表示自动取 dom（实例容器）的宽度。
- height: 定义图表高度。
- source：定义为chart装载数据，返回chart对象。
- scale：定义为指定的数据字段进行列定义，返回 chart 实例。
5. 知识点E - 如何定义提示框
chart.tooltip({
crosshairs: {
type: 'line'
}
});
- tooltip：定义图表的tooltip配置，G2图表的tooltip使用html渲染。
6. 知识点F - 如何渲染图表
chart.line().position('year*yearValue');
chart.point().position('year*yearValue').size(4).shape('circle').style({
stroke: '#fff',
lineWidth: 1
});
chart.render();
- line：渲染折线效果。
- point：渲染折线上点效果。
- render：用于将图表渲染至画布。
完整代码
<html lang="en">
<head>
<meta charset="UTF-8">
<title>基础折线图</title>
</head>
<body>
<div id="zhexiantu"></div>
<script src="./js/g2.min.js"></script>
<script src="./js/data-set.min.js"></script>
<script>
const data = [
{ year: '2001', yearValue: 3 },
{ year: '2002', yearValue: 4 },
{ year: '2003', yearValue: 3.5 },
{ year: '2004', yearValue: 5 },
{ year: '2005', yearValue: 4.9 },
{ year: '2006', yearValue: 6 },
{ year: '2007', yearValue: 7 },
{ year: '2008', yearValue: 9 },
{ year: '2009', yearValue: 13 }
];
const chart = new G2.Chart({
container: 'zhexiantu',
forceFit: true,
height: window.innerHeight
});
chart.source(data);
chart.scale('yearValue', {
min: 0
});
chart.scale('year', {
range: [ 0 , 1 ]
});
chart.tooltip({
crosshairs: {
type: 'line'
}
});
chart.line().position('year*yearValue');
chart.point().position('year*yearValue').size(4).shape('circle').style({
stroke: '#fff',
lineWidth: 1
});
chart.render();
</script>
</body>
</html>
最终效果
系列课程
- 我在乌托邦上有20多个关于eCharts的教程。
I have completed 20+ tutorials about echarts. - 如果您喜欢我的教程，可以在我的个人档案页面，获取更多信息。
If you like my tutorial , You can check out your profile for more such tutorials. - 您可以使用zqz-tutorial标签快速查看我发布的所有教程
You can use the "zqz-tutorial" tag to see all the tutorials I've posted.
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thank you very much~
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REJECTED. Copied from https://antv.alipay.com/zh-cn/g2/3.x/demo/line/basic.html
You can contact us on Discord.
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