How to create diagrams in DoIt
Create SVG diagrams using GoAT or Mermaid in DoIt
PCloudHugo 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.
1 GoAT
GoAT 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.
```goat
// ASCII input here
```Here are some examples of generated SVGs using GoAT.
More examples are available.
1.1 Trees
```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 Overlaps
```goat
.-. .-. .-. .-. .-. .-.
| | | | | | | | | | | |
.---------. .--+---+--. .--+---+--. .--| |--. .--+ +--. .------|--.
| | | | | | | | | | | | | | | | | |
'---------' '--+---+--' '--+---+--' '--| |--' '--+ +--' '--|------'
| | | | | | | | | | | |
'-' '-' '-' '-' '-' '-'
```1.3 Line Decorations
```goat
________ o * * .--------------.
*---+--. | | o o | ^ \ / | .----------. |
| | '--* -+- | | v / \ / | | <------. | |
| '-----> .---(---' --->*<--- / .+->*<--o----' | | | | |
<--' ^ ^ | | | | | ^ \ | '--------' | |
\/ *-----' o |<----->| '-----' |__| v '------------' |
/\ *---------------'
```1.4 Line Ends
```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 -->*
```1.5 Dot Grids
```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 · · · · · · · *
```1.6 Large Nodes
```goat
.---. .-. .-. .-. .-.
| A +----->| 1 +<---->| 2 |<----+ 4 +------------------. | 8 |
'---' '-' '+' '-' | '-'
| ^ | ^
v | v |
.-. .-+-. .-. .-+-. .-. .+. .---.
| 3 +---->| B |<----->| 5 +---->| C +---->| 6 +---->| 7 |<---->| D |
'-' '---' '-' '---' '-' '-' '---'
```1.7 Small Grids
```goat
___ ___ .---+---+---+---+---. .---+---+---+---. .---. .---.
___/ \___/ \ | | | | | | / \ / \ / \ / \ / | +---+ |
/ \___/ \___/ +---+---+---+---+---+ +---+---+---+---+ +---+ +---+
\___/ b \___/ \ | | | b | | | \ / \a/ \b/ \ / \ | +---+ |
/ a \___/ \___/ +---+---+---+---+---+ +---+---+---+---+ +---+ b +---+
\___/ \___/ \ | | a | | | | / \ / \ / \ / \ / | a +---+ |
\___/ \___/ '---+---+---+---+---' '---+---+---+---' '---' '---'
```1.8 Big Grids
```goat
.----. .----.
/ \ / \ .-----+-----+-----.
+ +----+ +----. | | | | .-----+-----+-----+-----+
\ / \ / \ | | | | / / / / /
+----+ B +----+ + +-----+-----+-----+ +-----+-----+-----+-----+
/ \ / \ / | | | | / / / / /
+ A +----+ +----+ | | B | | +-----+-----+-----+-----+
\ / \ / \ +-----+-----+-----+ / / A / B / /
'----+ +----+ + | | | | +-----+-----+-----+-----+
\ / \ / | A | | | / / / / /
'----' '----' '-----+-----+-----' '-----+-----+-----+-----+
```1.9 Complicated
```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. ---
```2 Mermaid
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.
```mermaid
// mermaid diagram code here
```Here are some examples of generated SVGs using Mermaid.
2.1 Flowchart
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.
```mermaid
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
```graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
2.2 Sequence diagram
A Sequence diagram is an interaction diagram that shows how processes operate with one another and in what order.
```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!
2.3 Gantt diagram
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.
```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
2.4 Class diagram
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.
```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
2.5 Git graph
```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).
```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
2.7 User Journey Diagram
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.
```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