使用G2创建Y轴堆叠柱状图/How To Use G2 To Make y-Axis stack bar charts

in utopian-io •  7 years ago  (edited)

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
  • 如何定义图例
  • 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
demo.gif

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="duidiezhuzhuangtu"></div>

使用

定义容器,用于展示图表。容器名:duidiezhuzhuangtu


3. 知识点C - 如何定义数据

  const data = [
    { name:'美国', '一月.': 18.9, '二月.': 28.8, '三月.' :39.3, '四月.': 81.4, '五月': 47, 'Jun.': 20.3, '七月.': 24, '八月.': 35.6, '九月.': 25, '十月.': 38, '十一月.': 45.6, '十二月.': 39.8 },
    { name:'俄罗斯', '一月.': 12.4, '二月.': 23.2, '三月.' :34.5, '四月.': 99.7, '五月': 52.6, 'Jun.': 35.5, '七月.': 37.4, '八月.': 42.4, '九月.': 46.5, '十月.': 44.4, '十一月.': 52.4, '十二月.': 63.5}
  ];
  • data:使用数组形式定义数据。
  • 格式:{名称:'对应图例名称',x轴值:y轴值,x轴值:y轴值}

4. 知识点D - 如何引用数据

  const chart = new G2.Chart({
    container: 'duidiezhuzhuangtu',
    forceFit: true,
    height: window.innerHeight
  });
  chart.source(dv);
  • container:定于数据从duidiezhuzhuangtu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。

5. 知识点E - 如何定义图例

  const ds = new DataSet();
  const dv = ds.createView().source(data);
  dv.transform({
    type: 'fold',
    fields: [ '一月.','二月.','三月.','四月.','五月','Jun.','七月.','八月.','九月.','十月.','十一月.','十二月.' ], // 展开字段集
    key: 'yuefen', 
    value: 'jiangyuliang', 
  });
  • fields:定义图例名称。格式:['图例名称','图例名称','....']
  • key:定义key值。
  • value:定义value值。

6. 知识点F - 如何渲染图表

  chart.intervalStack()
    .position('yuefen*jiangyuliang')
    .color('name');
  chart.render();
  • render:用于将图表渲染至画布。

完整代码

<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,height=device-height">
    <title>堆叠柱状图</title>
    <style>::-webkit-scrollbar{display:none;}html,body{overflow:hidden;height:100%;}</style>
</head>
<body>
<div id="duidiezhuzhuangtu"></div>
<script>/*Fixing iframe window.innerHeight 0 issue in Safari*/document.body.clientHeight;</script>
<script src="https://gw.alipayobjects.com/os/antv/assets/g2/3.0.4-beta.2/g2.min.js"></script>
<script src="https://gw.alipayobjects.com/os/antv/assets/data-set/0.8.3/data-set.min.js"></script>
<script>
  const data = [
    { name:'美国', '一月.': 18.9, '二月.': 28.8, '三月.' :39.3, '四月.': 81.4, '五月': 47, 'Jun.': 20.3, '七月.': 24, '八月.': 35.6, '九月.': 25, '十月.': 38, '十一月.': 45.6, '十二月.': 39.8 },
    { name:'俄罗斯', '一月.': 12.4, '二月.': 23.2, '三月.' :34.5, '四月.': 99.7, '五月': 52.6, 'Jun.': 35.5, '七月.': 37.4, '八月.': 42.4, '九月.': 46.5, '十月.': 44.4, '十一月.': 52.4, '十二月.': 63.5}
  ];
  const ds = new DataSet();
  const dv = ds.createView().source(data);
  dv.transform({
    type: 'fold',
    fields: [ '一月.','二月.','三月.','四月.','五月','Jun.','七月.','八月.','九月.','十月.','十一月.','十二月.' ], // 展开字段集
    key: 'yuefen', 
    value: 'jiangyuliang', 
  });
  const chart = new G2.Chart({
    container: 'duidiezhuzhuangtu',
    forceFit: true,
    height: window.innerHeight
  });
  chart.source(dv);
  chart.intervalStack()
    .position('yuefen*jiangyuliang')
    .color('name');
  chart.render();
</script>
</body>
</html>

最终效果
demo.gif

系列课程

  • 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.



Posted on Utopian.io - Rewarding Open Source Contributors

Authors get paid when people like you upvote their post.
If you enjoyed what you read here, create your account today and start earning FREE STEEM!
Sort Order:  

Thank you for the contribution. It has been approved.

You can contact us on Discord.
[utopian-moderator]

Copied from https://antv.alipay.com/zh-cn/g2/3.x/demo/bar/stacked-column.html

Variable names changed.

You can contact us on Discord.
[utopian-moderator]

No matter approved or not, I upvote and support you.

thanks

Hey @hui.zhao I am @utopian-io. I have just upvoted you!

Achievements

  • You have less than 500 followers. Just gave you a gift to help you succeed!
  • Seems like you contribute quite often. AMAZING!

Suggestions

  • Contribute more often to get higher and higher rewards. I wish to see you often!
  • Work on your followers to increase the votes/rewards. I follow what humans do and my vote is mainly based on that. Good luck!

Get Noticed!

  • Did you know project owners can manually vote with their own voting power or by voting power delegated to their projects? Ask the project owner to review your contributions!

Community-Driven Witness!

I am the first and only Steem Community-Driven Witness. Participate on Discord. Lets GROW TOGETHER!

mooncryption-utopian-witness-gif

Up-vote this comment to grow my power and help Open Source contributions like this one. Want to chat? Join me on Discord https://discord.gg/Pc8HG9x