Converting an existing datex2 source to a json-ld accessible page

npm install datex2-linker@0.3.2


Datex II linker

creating an accessible and standard JSON-LD page from an existing datex2 feed

Build Status npm version

Getting started


Make sure you have node and npm installed.

Install datex2-linker

$ npm install -g datex2-linker


To run it with a provided data source, you can use the datex2-linker program.

$ datex2-linker --source "" --base "http://localhost:8000/" --port 8000

Then you should be able to find a data source in json-ld at /data.jsonld and /data.json. At / there's some information about datex2, and other relevant links. The index will look like this:

screenshot of the index page of datex2-linker ran with Finnish data

If there are issues with combining this and your existing (valid) datex2, you should either open an issue or send a message on gitter.


  • parse xml to json
  • give each id an unique URI
  • serve json and ld+json
  • make that URI accessible on the web
  • an easy cli interface
  • tested with a range of datafeeds
  • published on npm


Who made this?

This is made by Haroen Viaene for iMinds (Data Science Lab) in the cadre of open Summer of code 2016.

Who is this for?

Two kinds of people. First of all this is for data publishers that want to make their existing datex2 feeds into json-ld without too much hassle. Secondly this is for developers dealing with a certain datex2 feeds, but want to access them more easily.

Can I use this programmatically instead of serving it via http?

Yes, you can. That's what the datex2-linker-api module on npm is for and is also used in this project.

What does this do exactly?

It converts the xml into json, adds a @context and adds @ids. Then it serves it as application/json and application/ld+json as well as a short intro into the used technologies.

Will this module cache?

No, you can use nginx or similar to cache the returned data based on your own preference. There's a good guide on how to do that written by nginx developers.

Will this module allow https?

No. You have to use a reverse proxy like you can do with nginx for example. Article on and by DigitalOcean.

The context does not contain a particular term

The datex2 terms were automatically generated from the datex2 xsl, but it's possible that something went wrong with the conversion. To add a term you can open an issue on OpenTransport/linked-datex2.

Other questions or issues?

You can always open an issue, or tweet @haroenv.


© 2016 - Open Knowledge Belgium - iMinds — Haroen Viaene and contributors

Licensed under the Apache 2.0 license.