This repository contains a sample of UDF-compatible data server.

Register for free at www.quandl.com to get a free API key.

Use NodeJS to launch yahoo.js with your Quandl key:

QUANDL_API_KEY=YOUR_KEY nodejs yahoo.js

Change the source URL in index.html file of the Charting Library:

datafeed: new Datafeeds.UDFCompatibleDatafeed("http://localhost:8888")

Save the file and restart the Charting Library server.