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https://github.com/nschloe/xhub
Extend GitHub pages with math, graphs etc.
https://github.com/nschloe/xhub
Last synced: about 1 month ago
JSON representation
Extend GitHub pages with math, graphs etc.
- Host: GitHub
- URL: https://github.com/nschloe/xhub
- Owner: nschloe
- License: gpl-3.0
- Created: 2022-02-08T18:12:05.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-04-23T20:33:03.000Z (about 2 months ago)
- Last Synced: 2024-05-01T23:58:05.552Z (about 2 months ago)
- Language: JavaScript
- Homepage:
- Size: 935 KB
- Stars: 89
- Watchers: 3
- Forks: 7
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
Lists
- awesome-LaTeX - xhub - Browser extension that lets you use LaTeX in GitHub pages. ![foss] (Engines / LaTeX formulas on the web)
- awesome - xhub
README
Extend GitHub pages with support for LaTeX, graphs, etc.
[](https://chrome.google.com/webstore/detail/xhub/anidddebgkllnnnnjfkmjcaallemhjee)
[](https://chrome.google.com/webstore/detail/xhub/anidddebgkllnnnnjfkmjcaallemhjee)
[](https://github.com/prettier/prettier)
[](https://chrome.google.com/webstore/detail/xhub/anidddebgkllnnnnjfkmjcaallemhjee)
xhub is a browser extension for Google Chrome that lets you use various add-ons
on GitHub READMEs, issues, wikis etc. The add-ons currently are
- [KaTeX](#latex) for LaTeX mathematics
- [Chart.js](#chartjs) for charts
- [Plotly](#plotly) for graphing
- [YouTube](#youtube-embed) for embedded Youtube videos
Plotting diagrams via [Mermaid](#mermaid) is now natively available on GitHub.
See [below](#latex) or [the
Wiki](https://github.com/nschloe/xhub/wiki/%60%60%60math) for examples.
Simply install the extension from the
- [Chrome Web Store](https://chrome.google.com/webstore/detail/xhub/anidddebgkllnnnnjfkmjcaallemhjee)
and enjoy.
### LaTeX
Use inline and display math like
````markdown
Display math:
```math
e^{i\tau} - 1 = 0
```
```katex
a^2 + b^2 = c^2
```
and line math `$V + F = E + 2$` or $`\sin^2(\alpha) + \cos^2(\alpha) = 1`$.
````
e.g., _Cauchy's Theorem_:
Let $`U`$ be an open subset of the complex plane $`\mathbb{C}`$, and suppose
the closed disk $`D`$ defined as
```katex
D = \bigl\{z:|z-z_{0}|\leq r\bigr\}
```
is completely contained in `$U$`. Let `$f: U\to\mathbb{C}$` be a holomorphic
function, and let `$\gamma$` be the circle, oriented counterclockwise, forming
the boundary of `$D$`. Then for every `$a$` in the interior of `$D$`,
```math
f(a) = \frac{1}{2\pi i} \oint _{\gamma}\frac{f(z)}{z-a} dz.
```
> **Note**
>
> Since May 2022, [GitHub has their own math support in
> Markdown.](https://github.blog/2022-05-19-math-support-in-markdown/) It's
> pretty buggy though, as outlined in [this blog
> post](https://nschloe.github.io/2022/05/20/math-on-github.html). For the time
> being, xhub will continue to provide math support. Note that, due to GitHub's
> changes, the old syntax
>
> ```
> $`...`$
> ```
>
> doesn't work reliably anymore.
> For best results, swap the backtick and the dollar sign to
>
> ```
> `$...$`
> ```
#### Chart.js
Use `chartjs` language blocks with the chart config as JSON and optionally canvas
attributes,
````markdown
```chartjs
{
"config": { ... },
"canvas": { ... }
}
```
````
e.g.,
```chartjs
{
"config": {
"type": "line",
"data": {
"labels": [1500,1600,1700,1750,1800,1850,1900,1950,1999,2050],
"datasets": [{
"data": [86,114,106,106,107,111,133,221,783,2478],
"label": "Africa",
"borderColor": "#3e95cd",
"fill": false
}, {
"data": [282,350,411,502,635,809,947,1402,3700,5267],
"label": "Asia",
"borderColor": "#8e5ea2",
"fill": false
}, {
"data": [168,170,178,190,203,276,408,547,675,734],
"label": "Europe",
"borderColor": "#3cba9f",
"fill": false
}, {
"data": [40,20,10,16,24,38,74,167,508,784],
"label": "Latin America",
"borderColor": "#e8c3b9",
"fill": false
}, {
"data": [6,3,2,2,7,26,82,172,312,433],
"label": "North America",
"borderColor": "#c45850",
"fill": false
}
]
},
"options": {
"title": {
"display": true,
"text": "World population per region (in millions)"
}
}
}
}
```
#### Plotly
Use `plotly` language blocks with the plot config as JSON
````markdown
```plotly
{
"data": [ ... ],
"layout": { ... }
}
```
````
e.g.,
```plotly
{
"data": [
{
"line": {"shape": "linear"},
"mode": "lines+markers",
"name": "linear",
"type": "scatter",
"x": [1, 2, 3, 4, 5],
"y": [1, 3, 2, 3, 1],
"hoverinfo": "name"
},
{
"line": {"shape": "spline"},
"mode": "lines+markers",
"name": "spline",
"type": "scatter",
"x": [1, 2, 3, 4, 5],
"y": [6, 8, 7, 8, 6],
"text": ["tweak line smoothness
with 'smoothing' in line object"],
"hoverinfo": "text+name"
},
{
"line": {"shape": "vhv"},
"mode": "lines+markers",
"name": "vhv",
"type": "scatter",
"x": [1, 2, 3, 4, 5],
"y": [11, 13, 12, 13, 11],
"hoverinfo": "name"
},
{
"line": {"shape": "hvh"},
"mode": "lines+markers",
"name": "hvh",
"type": "scatter",
"x": [1, 2, 3, 4, 5],
"y": [16, 18, 17, 18, 16],
"hoverinfo": "name"
},
{
"line": {"shape": "vh"},
"mode": "lines+markers",
"name": "vh",
"type": "scatter",
"x": [1, 2, 3, 4, 5],
"y": [21, 23, 22, 23, 21],
"hoverinfo": "name"
},
{
"line": {"shape": "hv"},
"mode": "lines+markers",
"name": "hv",
"type": "scatter",
"x": [1, 2, 3, 4, 5],
"y": [26, 28, 27, 28, 26],
"hoverinfo": "name"
}
],
"layout": {
"legend": {
"y": 0.5,
"font": {"size": 16},
"traceorder": "reversed"
}
}
}
```
#### Mermaid
[This is now available via GitHub itself.](https://github.blog/2022-02-14-include-diagrams-markdown-files-mermaid/)
#### YouTube embed
Here's an embedded YouTube video:
````markdown
```youtube-embed
{
"width": "560",
"height": "315",
"src": "https://www.youtube.com/embed/dQw4w9WgXcQ",
"title": "YouTube video player",
"frameborder": "0",
"allow": "accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture",
"allowfullscreen": true
}
```
````
```youtube-embed
{
"width": "560",
"height": "315",
"src": "https://www.youtube.com/embed/dQw4w9WgXcQ",
"title": "YouTube video player",
"frameborder": "0",
"allow": "accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture",
"allowfullscreen": true
}
```
### Badge
[](https://chrome.google.com/webstore/detail/xhub/anidddebgkllnnnnjfkmjcaallemhjee)
```markdown
[](https://chrome.google.com/webstore/detail/xhub/anidddebgkllnnnnjfkmjcaallemhjee)
```
### Development
#### Build instructions
To build the production zip, simply install the dependencies (`npm ci`), then run
```
npm run build
```
or
```
npm run watch
```
The unpacked development version of the extension will then be in `dist/`. Open Google
Chrome, go to `chrome://extensions` and `Load unpacked` this directory. Reload as
necessary.
### More module ideas
- [D3.js](https://d3js.org/)
Cannot be configured from a data file, but needs actual (user-provided) JS to be
`eval()`d - a no-go for extensions.