more d3 with shiny and R (CPI from bls.gov)

Extending the marginal success achieved in

d3 Showreel Combined with R and Shiny 

d3 and r interacting through shiny

I have converted http://bl.ocks.org/3891711 to use data supplied by an R load of http://bls.gov CPI data through Rstudio's Shiny.  The example does not work perfectly due to some NaN in the d3 path, but I wanted to publish for some feedback.

A live example is here (please be patient since it will download about 6mb before showing anything), and the code is here on Github.