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Mermaid之其他图 ​

markdown mermaid 其他 1 2021-12-17

ER图 ​

ER图关键字erDiagram，E-R图也称实体-联系图(Entity Relationship Diagram)，提供了表示实体类型、属性和联系的方法，用来描述现实世界的概念模型。

关系 ​

左值右值含义
|oo|0个或1个
||||有且仅有1个
}oo{0个或多个
}||{1个或多个

示例 ​

mermaid
---
title: 这是ER图标题
---
erDiagram
    CAR ||--o{ NAMED-DRIVER : allows
    CAR {
        string registrationNumber
        string make
        string model
    }
    PERSON ||--o{ NAMED-DRIVER : is
    PERSON {
        string firstName
        string lastName
        int age
    }

甘特图 ​

甘特图关键字gantt，每项任务描述有5个配置，其含义如下

位置含义可选值
1是否关键crit/缺省，crit会展示为红色
2状态done/active/缺省，完成灰色/激活为蓝色
3别名给定别名/缺省任务别名
4任务开始时间YYYY-MM-DD/after 其他代号/缺省
5任务结束时间YYYY-MM-DD/持续时长/缺省，h表示小时，d表示天，w表示周
mermaid
gantt
    dateFormat  YYYY-MM-DD
    title       Adding GANTT diagram functionality to mermaid
    excludes    weekends
    %% (`excludes` accepts specific dates in YYYY-MM-DD format, days of the week ("sunday") or "weekends", but not the word "weekdays".)

    section A section
    Completed task            :done,    des1, 2014-01-06,2014-01-08
    Active task               :active,  des2, 2014-01-09, 3d
    Future task               :         des3, after des2, 5d
    Future task2              :         des4, after des3, 5d

    section Critical tasks
    Completed task in the critical line :crit, done, 2014-01-06,24h
    Implement parser and jison          :crit, done, after des1, 2d
    Create tests for parser             :crit, active, 3d
    Future task in critical line        :crit, 5d
    Create tests for renderer           :2d
    Add to mermaid                      :1d
    Functionality added                 :milestone, 2014-01-25, 0d

    section Documentation
    Describe gantt syntax               :active, a1, after des1, 3d
    Add gantt diagram to demo page      :after a1  , 20h
    Add another diagram to demo page    :doc1, after a1  , 48h

    section Last section
    Describe gantt syntax               :after doc1, 3d
    Add gantt diagram to demo page      :20h
    Add another diagram to demo page    :48h

饼图 ​

饼图关键字pie

mermaid
pie
    title Key elements in Product X
    "Calcium" : 42.96
    "Potassium" : 50.05
    "Magnesium" : 10.01
    "Iron" :  5

时间轴图 ​

时间轴图关键字timeline

title定义图标题，可以没有

事件定义格式如下

js
// 单事件
time : event

// 多事件
time : event1
     : event2
     : event3

// 多事件
time : event1 : event2 : event3

  • 简单示例

    mermaid
    timeline
    title History of Social Media Platform
    2002 : LinkedIn
    2004 : Facebook : Google
    2005 : Youtube
    2006 : Twitter

  • 带分组

    mermaid
    timeline
        title England's History Timeline
        section Stone Age
          7600 BC : Britain's oldest known house was built in Orkney, Scotland
          6000 BC : Sea levels rise and Britain becomes an island.<br> The people who live here are hunter-gatherers.
        section Bronze Age
          2300 BC : People arrive from Europe and settle in Britain. <br>They bring farming and metalworking.
                  : New styles of pottery and ways of burying the dead appear.
          2200 BC : The last major building works are completed at Stonehenge.<br> People now bury their dead in stone circles.
                  : The first metal objects are made in Britain.Some other nice things happen. it is a good time to be alive.