375 lines
8.2 KiB
Markdown
375 lines
8.2 KiB
Markdown
+++
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title = "Mermaid"
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weight = 8
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description = "Generate diagrams, flowcharts, and piecharts from text in a similar manner as markdown."
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+++
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[Mermaid](https://mermaidjs.github.io/) is library that helps you generate diagrams, flowcharts, and piecharts from text in a similar manner as markdown.
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With compose theme, you can use mermaid using a custom shortcode as follows:
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### Sequence Diagrams
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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sequenceDiagram
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participant Alice
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participant Bob
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Alice->>John: Hello John, how are you?
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loop Healthcheck
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John->>John: Fight against hypochondria
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end
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Note right of John: Rational thoughts<br/>prevail...
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John-->>Alice: Great!
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John->>Bob: How about you?
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Bob-->>John: Jolly good!
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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sequenceDiagram
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participant Alice
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participant Bob
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Alice->>John: Hello John, how are you?
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loop Healthcheck
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John->>John: Fight against hypochondria
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end
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Note right of John: Rational thoughts<br/>prevail...
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John-->>Alice: Great!
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John->>Bob: How about you?
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Bob-->>John: Jolly good!
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{{< /mermaid >}}
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### Flow Charts
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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flowchart TB
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c1-->a2
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subgraph one
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a1-->a2
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end
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subgraph two
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b1-->b2
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end
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subgraph three
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c1-->c2
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end
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one --> two
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three --> two
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two --> c2
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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flowchart TB
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c1-->a2
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subgraph one
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a1-->a2
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end
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subgraph two
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b1-->b2
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end
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subgraph three
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c1-->c2
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end
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one --> two
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three --> two
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two --> c2
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{{< /mermaid >}}
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### Graphs
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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graph TB
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sq[Square shape] --> ci((Circle shape))
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subgraph A
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od>Odd shape]-- Two line<br/>edge comment --> ro
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di{Diamond with <br/> line break} -.-> ro(Rounded<br>square<br>shape)
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di==>ro2(Rounded square shape)
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end
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%% Notice that no text in shape are added here instead that is appended further down
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e --> od3>Really long text with linebreak<br>in an Odd shape]
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%% Comments after double percent signs
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e((Inner / circle<br>and some odd <br>special characters)) --> f(,.?!+-*ز)
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cyr[Cyrillic]-->cyr2((Circle shape Начало));
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classDef green fill:#9f6,stroke:#333,stroke-width:2px;
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classDef orange fill:#f96,stroke:#333,stroke-width:4px;
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class sq,e green
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class di orange
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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graph TB
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sq[Square shape] --> ci((Circle shape))
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subgraph A
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od>Odd shape]-- Two line<br/>edge comment --> ro
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di{Diamond with <br/> line break} -.-> ro(Rounded<br>square<br>shape)
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di==>ro2(Rounded square shape)
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end
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%% Notice that no text in shape are added here instead that is appended further down
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e --> od3>Really long text with linebreak<br>in an Odd shape]
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%% Comments after double percent signs
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e((Inner / circle<br>and some odd <br>special characters)) --> f(,.?!+-*ز)
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cyr[Cyrillic]-->cyr2((Circle shape Начало));
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classDef green fill:#9f6,stroke:#333,stroke-width:2px;
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classDef orange fill:#f96,stroke:#333,stroke-width:4px;
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class sq,e green
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class di orange
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{{< /mermaid >}}
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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graph LR
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A[Hard edge] -->|Link text| B(Round edge)
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B --> C{Decision}
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C -->|One| D[Result one]
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C -->|Two| E[Result two]
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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graph LR
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A[Hard edge] -->|Link text| B(Round edge)
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B --> C{Decision}
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C -->|One| D[Result one]
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C -->|Two| E[Result two]
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{{< /mermaid >}}
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### Class Diagram
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{{< mermaid >}}
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classDiagram
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Animal <|-- Duck
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Animal <|-- Fish
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Animal <|-- Zebra
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Animal : +int age
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Animal : +String gender
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Animal: +isMammal()
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Animal: +mate()
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class Duck{
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+String beakColor
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+swim()
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+quack()
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}
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class Fish{
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-int sizeInFeet
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-canEat()
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}
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class Zebra{
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+bool is_wild
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+run()
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}
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{{< /mermaid >}}
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### State Diagram
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{{< mermaid >}}
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stateDiagram-v2
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[*] --> Active
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state Active {
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[*] --> NumLockOff
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NumLockOff --> NumLockOn : EvNumLockPressed
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NumLockOn --> NumLockOff : EvNumLockPressed
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--
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[*] --> CapsLockOff
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CapsLockOff --> CapsLockOn : EvCapsLockPressed
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CapsLockOn --> CapsLockOff : EvCapsLockPressed
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--
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[*] --> ScrollLockOff
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ScrollLockOff --> ScrollLockOn : EvScrollLockPressed
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ScrollLockOn --> ScrollLockOff : EvScrollLockPressed
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}
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{{< /mermaid >}}
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{{< mermaid >}}
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stateDiagram-v2
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State1: The state with a note
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note right of State1
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Important information! You can write
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notes.
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end note
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State1 --> State2
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note left of State2 : This is the note to the left.
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{{< /mermaid >}}
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### Relationship Diagrams
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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erDiagram
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CUSTOMER ||--o{ ORDER : places
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ORDER ||--|{ LINE-ITEM : contains
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CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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erDiagram
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CUSTOMER ||--o{ ORDER : places
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ORDER ||--|{ LINE-ITEM : contains
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CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
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{{< /mermaid >}}
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### User Journey
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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journey
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title My working day
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section Go to work
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Make tea: 5: Me
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Go upstairs: 3: Me
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Do work: 1: Me, Cat
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section Go home
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Go downstairs: 5: Me
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Sit down: 5: Me
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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journey
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title My working day
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section Go to work
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Make tea: 5: Me
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Go upstairs: 3: Me
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Do work: 1: Me, Cat
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section Go home
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Go downstairs: 5: Me
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Sit down: 5: Me
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{{< /mermaid >}}
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### Gantt
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**Syntax**
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```tpl
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{{</* mermaid */>}}
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gantt
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dateFormat YYYY-MM-DD
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title Adding GANTT diagram functionality to mermaid
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excludes weekends
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%% (`excludes` accepts specific dates in YYYY-MM-DD format, days of the week ("sunday") or "weekends", but not the word "weekdays".)
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section A section
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Completed task :done, des1, 2014-01-06,2014-01-08
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Active task :active, des2, 2014-01-09, 3d
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Future task : des3, after des2, 5d
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Future task2 : des4, after des3, 5d
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section Critical tasks
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Completed task in the critical line :crit, done, 2014-01-06,24h
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Implement parser and jison :crit, done, after des1, 2d
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Create tests for parser :crit, active, 3d
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Future task in critical line :crit, 5d
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Create tests for renderer :2d
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Add to mermaid :1d
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section Documentation
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Describe gantt syntax :active, a1, after des1, 3d
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Add gantt diagram to demo page :after a1 , 20h
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Add another diagram to demo page :doc1, after a1 , 48h
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section Last section
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Describe gantt syntax :after doc1, 3d
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Add gantt diagram to demo page :20h
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Add another diagram to demo page :48h
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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gantt
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dateFormat YYYY-MM-DD
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title Adding GANTT diagram functionality to mermaid
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excludes weekends
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%% (`excludes` accepts specific dates in YYYY-MM-DD format, days of the week ("sunday") or "weekends", but not the word "weekdays".)
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section A section
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Completed task :done, des1, 2014-01-06,2014-01-08
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Active task :active, des2, 2014-01-09, 3d
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Future task : des3, after des2, 5d
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Future task2 : des4, after des3, 5d
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section Critical tasks
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Completed task in the critical line :crit, done, 2014-01-06,24h
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Implement parser and jison :crit, done, after des1, 2d
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Create tests for parser :crit, active, 3d
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Future task in critical line :crit, 5d
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Create tests for renderer :2d
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Add to mermaid :1d
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section Documentation
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Describe gantt syntax :active, a1, after des1, 3d
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Add gantt diagram to demo page :after a1 , 20h
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Add another diagram to demo page :doc1, after a1 , 48h
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section Last section
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Describe gantt syntax :after doc1, 3d
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Add gantt diagram to demo page :20h
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Add another diagram to demo page :48h
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{{< /mermaid >}}
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### Pie Chart
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```tpl
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{{</* mermaid */>}}
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pie
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title Key elements in Product X
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"Calcium" : 42.96
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"Potassium" : 50.05
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"Magnesium" : 10.01
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"Iron" : 5
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{{</* /mermaid */>}}
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```
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**Result**
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{{< mermaid >}}
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pie
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title Key elements in Product X
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"Calcium" : 42.96
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"Potassium" : 50.05
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"Magnesium" : 10.01
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"Iron" : 5
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{{< /mermaid >}}
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