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How to create diagrams in DoIt

Create SVG diagrams using GoAT or Mermaid in DoIt

PCloud avatarPCloud  included in  category Documentation and series How to DoIt
     2552 words  12 minutes 
Series - How to DoIt
Note

Hugo v0.93.0 or later is required for drawing custom diagrams.

Check out the mermaid shortcode if you have to use an older version of Hugo.

GoATGo ASCII Tool is a Go implementation of markdeep.mini.js’s ASCII diagram generator.

To use GoAT, simply place the ASCII input inside a code block with the language set to goat.

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```goat
// ASCII input here
```

Here are some examples of generated SVGs using GoAT.

More examples are available.

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```goat
          .               .                .               .--- 1          .-- 1     / 1
         / \              |                |           .---+            .-+         +
        /   \         .---+---.         .--+--.        |   '--- 2      |   '-- 2   / \ 2
       +     +        |       |        |       |    ---+            ---+          +
      / \   / \     .-+-.   .-+-.     .+.     .+.      |   .--- 3      |   .-- 3   \ / 3
     /   \ /   \    |   |   |   |    |   |   |   |     '---+            '-+         +
     1   2 3   4    1   2   3   4    1   2   3   4         '--- 4          '-- 4     \ 4
```
1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 
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```goat
           .-.           .-.           .-.           .-.           .-.           .-.
          |   |         |   |         |   |         |   |         |   |         |   |
       .---------.   .--+---+--.   .--+---+--.   .--|   |--.   .--+   +--.   .------|--.
      |           | |           | |   |   |   | |   |   |   | |           | |   |   |   |
       '---------'   '--+---+--'   '--+---+--'   '--|   |--'   '--+   +--'   '--|------'
          |   |         |   |         |   |         |   |         |   |         |   |
           '-'           '-'           '-'           '-'           '-'           '-'
```

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```goat
                ________                            o        *          *   .--------------.
   *---+--.    |        |     o   o      |         ^          \        /   |  .----------.  |
       |   |    '--*   -+-    |   |      v        /            \      /    | |  <------.  | |
       |    '----->       .---(---'  --->*<---   /      .+->*<--o----'     | |          | | |
   <--'  ^  ^             |   |                 |      | |  ^    \         |  '--------'  | |
          \/        *-----'   o     |<----->|   '-----'  |__|     v         '------------'  |
          /\                                                               *---------------'
```

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```goat
   o--o    *--o     /  /   *  o  o o o o   * * * *   o o o o   * * * *      o o o o   * * * *
   o--*    *--*    v  v   ^  ^   | | | |   | | | |    \ \ \ \   \ \ \ \    / / / /   / / / /
   o-->    *-->   *  o   /  /    o * v '   o * v '     o * v \   o * v \  o * v /   o * v /
   o---    *---
                                 ^ ^ ^ ^   . . . .   ^ ^ ^ ^   \ \ \ \      ^ ^ ^ ^   / / / /
   |  |   *  o  \  \   *  o      | | | |   | | | |    \ \ \ \   \ \ \ \    / / / /   / / / /
   v  v   ^  ^   v  v   ^  ^     o * v '   o * v '     o * v \   o * v \  o * v /   o * v /
   *  o   |  |    *  o   \  \

   <--o   <--*   <-->   <---      ---o   ---*   --->   ----      *<--   o<--   -->o   -->*
```

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```goat
  o o o o o  * * * * *  * * o o *    o o o      * * *      o o o     · * · · ·     · · ·
  o o o o o  * * * * *  o o o o *   o o o o    * * * *    * o * *    · * * · ·    · · · ·
  o o o o o  * * * * *  o * o o o  o o o o o  * * * * *  o o o o o   · o · · o   · · * * ·
  o o o o o  * * * * *  o * o o o   o o o o    * * * *    o * o o    · · · · o    · · * ·
  o o o o o  * * * * *  * * * * o    o o o      * * *      o * o     · · · · ·     · · *
```
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 
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```goat
   .---.       .-.        .-.       .-.                                       .-.
   | A +----->| 1 +<---->| 2 |<----+ 4 +------------------.                  | 8 |
   '---'       '-'        '+'       '-'                    |                  '-'
                           |         ^                     |                   ^
                           v         |                     v                   |
                          .-.      .-+-.        .-.      .-+-.      .-.       .+.       .---.
                         | 3 +---->| B |<----->| 5 +---->| C +---->| 6 +---->| 7 |<---->| D |
                          '-'      '---'        '-'      '---'      '-'       '-'       '---'
```
A 1 2 3 4 B 5 C 6 8 7 D 
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```goat
       ___     ___      .---+---+---+---+---.     .---+---+---+---.  .---.   .---.
   ___/   \___/   \     |   |   |   |   |   |    / \ / \ / \ / \ /   |   +---+   |
  /   \___/   \___/     +---+---+---+---+---+   +---+---+---+---+    +---+   +---+
  \___/ b \___/   \     |   |   | b |   |   |    \ / \a/ \b/ \ / \   |   +---+   |
  / a \___/   \___/     +---+---+---+---+---+     +---+---+---+---+  +---+ b +---+
  \___/   \___/   \     |   | a |   |   |   |    / \ / \ / \ / \ /   | a +---+   |
      \___/   \___/     '---+---+---+---+---'   '---+---+---+---'    '---'   '---'
```
a b a b a b a b 
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```goat
    .----.        .----.
   /      \      /      \            .-----+-----+-----.
  +        +----+        +----.      |     |     |     |          .-----+-----+-----+-----+
   \      /      \      /      \     |     |     |     |         /     /     /     /     /
    +----+   B    +----+        +    +-----+-----+-----+        +-----+-----+-----+-----+
   /      \      /      \      /     |     |     |     |       /     /     /     /     /
  +   A    +----+        +----+      |     |  B  |     |      +-----+-----+-----+-----+
   \      /      \      /      \     +-----+-----+-----+     /     /  A  /  B  /     /
    '----+        +----+        +    |     |     |     |    +-----+-----+-----+-----+
          \      /      \      /     |  A  |     |     |   /     /     /     /     /
           '----'        '----'      '-----+-----+-----'  '-----+-----+-----+-----+
```
A B A B A B 
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```goat
+-------------------+                           ^                      .---.
|    A Box          |__.--.__    __.-->         |      .-.             |   |
|                   |        '--'               v     | * |<---        |   |
+-------------------+                                  '-'             |   |
                       Round                                       *---(-. |
  .-----------------.  .-------.    .----------.         .-------.     | | |
 |   Mixed Rounded  | |         |  / Diagonals  \        |   |   |     | | |
 | & Square Corners |  '--. .--'  /              \       |---+---|     '-)-'       .--------.
 '--+------------+-'  .--. |     '-------+--------'      |   |   |       |        / Search /
    |            |   |    | '---.        |               '-------'       |       '-+------'
    |<---------->|   |    |      |       v                Interior                 |     ^
    '           <---'      '----'   .-----------.              ---.     .---       v     |
 .------------------.  Diag line    | .-------. +---.              \   /           .     |
 |   if (a > b)     +---.      .--->| |       | |    | Curved line  \ /           / \    |
 |   obj->fcn()     |    \    /     | '-------' |<--'                +           /   \   |
 '------------------'     '--'      '--+--------'      .--. .--.     |  .-.     +Done?+-'
    .---+-----.                        |   ^           |\ | | /|  .--+ |   |     \   /
    |   |     | Join        \|/        |   | Curved    | \| |/ | |    \    |      \ /
    |   |     +---->  o    --o--        '-'  Vertical  '--' '--'  '--  '--'        +  .---.
 <--+---+-----'       |     /|\                                                    |  | 3 |
                      v                             not:line    'quotes'        .-'   '---'
  .-.             .---+--------.            /            A || B   *bold*       |        ^
 |   |           |   Not a dot  |      <---+---<--    A dash--is not a line    v        |
  '-'             '---------+--'          /           Nor/is this.            ---
```
& A M S i o i q f b B x u j o e a ( - x d r a > e f R > c o C n u o b ( n r ) ) d n e e J d r o s i n N o R D t o i u a a n g d d l o i t n e D i a g o n a l s C V u e r r v t e i d c a l n o t A N C : o u l d r r i A a / I v n s i n e e h s t d - e - t r l B i h i i s i o n ' s r e q n . u * o o b t t o e l a s d ' * l i n e D o n S e e ? a r c 3 h

Mermaid is a JavaScript-based diagramming and charting tool that renders Markdown-inspired text definitions to create and modify diagrams dynamically. It lets you create diagrams and visualizations using text and code.

To use Mermaid, simply place the mermaid code inside a code block with the language set to mermaid.

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```mermaid
// mermaid diagram code here
```

Here are some examples of generated SVGs using Mermaid.

All Flowcharts are composed of nodes, geometric shapes and edges, the arrows or lines. The mermaid code defines the way that these nodes and edges are made and interact.

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```mermaid
graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;
```

graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

A Sequence diagram is an interaction diagram that shows how processes operate with one another and in what order.

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```mermaid
sequenceDiagram
    participant Alice
    participant Bob
    Alice->>John: Hello John, how are you?
    loop Healthcheck
        John->>John: Fight against hypochondria
    end
    Note right of John: Rational thoughts <br/>prevail!
    John-->>Alice: Great!
    John->>Bob: How about you?
    Bob-->>John: Jolly good!
```

sequenceDiagram
    participant Alice
    participant Bob
    Alice->>John: Hello John, how are you?
    loop Healthcheck
        John->>John: Fight against hypochondria
    end
    Note right of John: Rational thoughts 
prevail!
    John-->>Alice: Great!
    John->>Bob: How about you?
    Bob-->>John: Jolly good!

A Gantt chart is a type of bar chart, first developed by Karol Adamiecki in 1896, and independently by Henry Gantt in the 1910s, that illustrates a project schedule and the amount of time it would take for any one project to finish. Gantt charts illustrate numbers of days between the start and finish dates of the terminal elements and summary elements of a project.

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```mermaid
gantt
dateFormat  YYYY-MM-DD
title Adding GANTT diagram to mermaid
excludes weekdays 2014-01-10

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
```

gantt
dateFormat  YYYY-MM-DD
title Adding GANTT diagram to mermaid
excludes weekdays 2014-01-10

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

The class diagram is the main building block of object-oriented modelling. It is used for general conceptual modelling of the structure of the application, and detailed modelling translating the models into programming code. Class diagrams can also be used for data modelling. The classes in a class diagram represent both the main elements, interactions in the application, and the classes to be programmed.

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```mermaid
classDiagram
Class01 <|-- AveryLongClass : Cool
Class03 *-- Class04
Class05 o-- Class06
Class07 .. Class08
Class09 --> C2 : Where am i?
Class09 --* C3
Class09 --|> Class07
Class07 : equals()
Class07 : Object[] elementData
Class01 : size()
Class01 : int chimp
Class01 : int gorilla
Class08 <--> C2: Cool label
```

classDiagram
Class01 <|-- AveryLongClass : Cool
Class03 *-- Class04
Class05 o-- Class06
Class07 .. Class08
Class09 --> C2 : Where am i?
Class09 --* C3
Class09 --|> Class07
Class07 : equals()
Class07 : Object[] elementData
Class01 : size()
Class01 : int chimp
Class01 : int gorilla
Class08 <--> C2: Cool label

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```mermaid
gitGraph
    commit
    branch hotfix
    checkout hotfix
    commit
    branch develop
    checkout develop
    commit id:"ash" tag:"abc"
    branch featureB
    checkout featureB
    commit type:HIGHLIGHT
    checkout main
    checkout hotfix
    commit type:NORMAL
    checkout develop
    commit type:REVERSE
    checkout featureB
    commit
    checkout main
    merge hotfix
    checkout featureB
    commit
    checkout develop
    branch featureA
    commit
    checkout develop
    merge hotfix
    checkout featureA
    commit
    checkout featureB
    commit
    checkout develop
    merge featureA
    branch release
    checkout release
    commit
    checkout main
    commit
    checkout release
    merge main
    checkout develop
    merge release
```

gitGraph
    commit
    branch hotfix
    checkout hotfix
    commit
    branch develop
    checkout develop
    commit id:"ash" tag:"abc"
    branch featureB
    checkout featureB
    commit type:HIGHLIGHT
    checkout main
    checkout hotfix
    commit type:NORMAL
    checkout develop
    commit type:REVERSE
    checkout featureB
    commit
    checkout main
    merge hotfix
    checkout featureB
    commit
    checkout develop
    branch featureA
    commit
    checkout develop
    merge hotfix
    checkout featureA
    commit
    checkout featureB
    commit
    checkout develop
    merge featureA
    branch release
    checkout release
    commit
    checkout main
    commit
    checkout release
    merge main
    checkout develop
    merge release

2.6 Entity Relationship Diagram - experimental

An entity–relationship diagram (or ER diagram) describes interrelated things of interest in a specific domain of knowledge. A basic ER diagram is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).

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```mermaid
erDiagram
    CUSTOMER ||--o{ ORDER : places
    ORDER ||--|{ LINE-ITEM : contains
    CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
```

erDiagram
    CUSTOMER ||--o{ ORDER : places
    ORDER ||--|{ LINE-ITEM : contains
    CUSTOMER }|..|{ DELIVERY-ADDRESS : uses

User journey diagrams describe at a high level of detail exactly what steps different users take to complete a specific task within a system, application or website. This technique shows the current (as-is) user workflow, and reveals areas of improvement for the to-be workflow.

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```mermaid
journey
    title My working day
    section Go to work
      Make tea: 5: Me
      Go upstairs: 3: Me
      Do work: 1: Me, Cat
    section Go home
      Go downstairs: 5: Me
      Sit down: 5: Me
```

journey
    title My working day
    section Go to work
      Make tea: 5: Me
      Go upstairs: 3: Me
      Do work: 1: Me, Cat
    section Go home
      Go downstairs: 5: Me
      Sit down: 5: Me
Updated on 2024-02-21  6b3b5a4a
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