Thanks! You're not thick, it's just that this isn't really the best visualization choice for the data since the rings are independent and not hierarchical (lik

Thanks! You're not thick, it's just that this isn't really the best visualization choice for the data since the rings are independent and not hierarchical (like in http://mbostock.github.com/d3/ex/sunburst.html http://mbostock.github.com/d3/ex/sunburst.html). You are absolutely right about the scale for the bar charts, oversight on my part which I have fixed now. The adding to 99% is a rounding error (you can see the fully number value by mousing over a bar) - thanks a ton for your feedback!