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gatsby-remark-vega

v0.2.6

Published

Adds the ability to include a [Vega](https://vega.github.io/vega/) visualization from a markdown file.

Downloads

3

Readme

gatsby-remark-vega

Adds the ability to include a Vega visualization from a markdown file.

An example of an embedded Vega visualization

Usage

In your markdown, you can include vega JSON files like so:

My awesome post needs a chart:

`vega:chart.json`

Look at that chart!

The json file should sit within the same folder as the markdown file.

An example repo demonstrating the plugin is available.

Installation

The plugin can be installed with npm or yarn:

npm install gatsby-transformer-remark rehype-react gatsby-remark-vega

yarn add gatsby-transformer-remark rehype-react gatsby-remark-vega

The process for installing this plugin mimics that of gatsby-remark-component.

1.

Include the plugin in gatsby-config.js, as a plugin option for gatsby-transformer-remark:

// In your gatsby-config.js
plugins: [
  {
    resolve: `gatsby-transformer-remark`,
    options: {
      plugins: [
        `gatsby-remark-vega`,
      ],
    },
  },
];

2.

In your template, follow the same technique as showcased in gatsby-remark-component:

// within your markdown template
import rehypeReact from "rehype-react"
import Vega, { KEY as VegaKey } from "gatsby-remark-vega/dist/client";

const renderAst = new rehypeReact({
  createElement: React.createElement,
  components: {
    [vegaKey]: Vega,
  }
}).Compiler

3.

Where you render your markdown, replace:

<div dangerouslySetInnerHTML={{ __html: post.html }} />

with

<div>{renderAst(post.htmlAst)}</div>

4.

In your graphql query, make sure to select htmlAst:

...
markdownRemark(fields: { slug: { eq: $slug } }) {
 htmlAst // previously `html`
 ...
}