This is a simple line graph designed to allow investigation of aspects of using d3.js and is used as a teaching aid.
It is the baseline example graph used in the D3 Tips and Tricks book.
Edit: June 2014
I am going through a process of updating the code resources for the book and the latest (but not particularly different) example of this graph is here.
if i use integer values for the column value "close" it isnt working should i change anything in the path?