title: Adding a data overlay to a time series chart
body: <p>Is something like <a href="https://www.google.com/finance?q=INDEXDJX%3A.DJI%2CINDEXSP%3A.INX%2CINDEXNASDAQ%3A.IXIC&amp;ei=fNddUejQO6WAlwOElQE" rel="nofollow">this</a> possible with d3?</p>
  
  <p>I'd like to see the specific data points on mouseover. I've done it for bar charts, but it seems a little trickier for time series data. Does anyone know of any examples?</p>
  
  <p>Inspecting some of the charts on <a href="http://nvd3.org/" rel="nofollow">NVD3's home page</a> reveals that they've added a certain number of points that they reveal on mouseover. Ideally I'd like to have all of them, and display the info in one spot, just like the Google chart. Any ideas?</p>