怎么使用markdownplus画线图/How to use markdownplus to create a line chart

Summary:
Markdown-plus is a markdown editor, but it also can help us to create charts . Today i will show you how to use markdownplus to create line chart.
Markdown-plus从名字看是markdown的升级版，不仅仅可以让我们用md语法写文章，同时支持让我们创建图表，今天我介绍如何使用markdown-plus 创建连线图。

因为markdown-plus扩展支持了chart.js,所以我们只需要执行简短的代码就可以绘制精美的统计图，而不需要去学习太多chart.js的知识。

What Will I Learn?/教程知识点

• Markdown语法格式输入，以及如何支持扩展语言
• 声明连线图
• 设置X轴标签名称
• 设置连线图外观
• 录入数据

Requirements/要求

• 简单英文基础
• 简单markdown语法基础
• 下载markdown-plus编辑器

Difficulty/难度

简单

Tutorial Contents/教程内容

下面先看一个简单例子：

演示代码如下：

{
  "type": "line",
  "data": {
    "labels": [
      "January",
      "February",
      "March",
      "April",
      "May",
      "June",
      "July"
    ],
    "datasets": [
      {
        "label": "# of bugs",
        "fill": false,
        "lineTension": 0.1,
        "backgroundColor": "rgba(75,192,192,0.4)",
        "borderColor": "rgba(75,192,192,1)",
        "borderCapStyle": "butt",
        "borderDash": [],
        "borderDashOffset": 0,
        "borderJoinStyle": "miter",
        "pointBorderColor": "rgba(75,192,192,1)",
        "pointBackgroundColor": "#fff",
        "pointBorderWidth": 1,
        "pointHoverRadius": 5,
        "pointHoverBackgroundColor": "rgba(75,192,192,1)",
        "pointHoverBorderColor": "rgba(220,220,220,1)",
        "pointHoverBorderWidth": 2,
        "pointRadius": 1,
        "pointHitRadius": 10,
        "data": [
          65,55,
          59,55,
          80,3,
          81,3,
          56,4,
          55.5,
          40
        ],
        "spanGaps": false
              }
    ]
  },
  "options": {}
}

知识点1：Markdown语法格式输入，以及如何支持扩展语言

markdown 里面代码是使用 英文状态下的4个顿号括起来的，如下：

····
代码  //此时，这部分内容是不被执行的，在markdown会直接显示出来。
····

效果是代码高亮，区别于别的内容。

想要实现进度图，markdown语法是不支持的，而markdown-plus支持语法扩展，所以我们可以在markdown-plus输入别的语法来实现我们需要的功能。

····chart
代码区域
····

这里我们使用扩展语法 chart来制作进度图图，此时，代码区域的内容会被执行。

知识点2：声明连线图

"type": "line",

type为图表类型，line即为连线图。

知识点3：设置X轴标签名称

"data": {
    "labels": [
      "January",
      "February",
      "March",
      "April",
      "May",
      "June",
      "July"
    ],

labels即为标签，这里设置的是显示在X轴上面的各个标签名称。用双引号括起来，用逗号隔开。例子如下：

知识点4：设置连线图外观

"datasets": [
      {
        "label": "# of bugs",
        "fill": false,
        "lineTension": 0.1,
        "backgroundColor": "rgba(75,192,192,0.4)",
        "borderColor": "rgba(75,192,192,1)",
        "borderCapStyle": "butt",
        "borderDash": [],
        "borderDashOffset": 0,
        "borderJoinStyle": "miter",
        "pointBorderColor": "rgba(75,192,192,1)",
        "pointBackgroundColor": "#fff",
        "pointBorderWidth": 1,
        "pointHoverRadius": 5,
        "pointHoverBackgroundColor": "rgba(75,192,192,1)",
        "pointHoverBorderColor": "rgba(220,220,220,1)",
        "pointHoverBorderWidth": 2,
        "pointRadius": 1,
        "pointHitRadius": 10,
       }
    ]

label 图例，显示在表格上方，如下：

其余参数介绍：

Line Configuration 线性设置

Point Configuration点型设置

Rectangle Configuration矩形设置

知识点5：录入数据

"data": [
          65,
          59,
          80,
          80,
          50,
          55,
          40
        ],

此部分代码还是要写在dataset里，data：数据。格式 "data":{data1,data2,data3……}

x轴标签有多少个就录入多少个数据。

下面是个简单实例：

代码如下：

{
  "type": "line",
  "data": {
    "labels": [
      "A",
      "B",
      "C",
      "D",
      "E",
      "F",
      "G",
      "H",
      "I",
      "J",
      "K",
      "L",
      "M",
      "N"
    ],
    "datasets": [
      {
        "label": "# of bugs ",
        "fill": true,
        "lineTension": 0.6,
        "backgroundColor": "rgba(25,102,192,0.1)",
        "borderColor": "rgba(75,92,192,1)",
        "borderCapStyle": "butt",
        "borderDash": [],
        "borderDashOffset": 1,
        "borderJoinStyle": "miter",
        "pointBorderColor": "rgba(175,192,192,1)",
        "pointBackgroundColor": "#fff",
        "pointBorderWidth": 1,
        "pointHoverRadius": 5,
        "pointHoverBackgroundColor": "rgba(175,192,192,1)",
        "pointHoverBorderColor": "rgba(225,225,220,1)",
        "pointHoverBorderWidth": 2,
        "pointRadius": 1,
        "pointHitRadius": 11,
        "data": [
          65,
          59,
          80,
          81,
          56,
          55,
          40,
          15,
          5,
          11.3,
          21,
          6,
          5,
          10
        ],
        "spanGaps": false
      }
    ]
  },
  "options": {}
}

Curriculum/系列课程

• 怎么使用markdownplus画流程图/How to use markdownplus to create a flow chart
• 怎么使用markdownplus画工作进度图/How to use markdownplus to create work schedule
• 怎么使用markdownplus画时序图/How to use markdownplus to create relation diagram

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Posted on Utopian.io - Rewarding Open Source Contributors

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