How to create bubble charts using NVD3

Question

How to create a bubble chart as in http://bl.ocks.org/mbostock/raw/4063269/:

...but using NVD3?

The NVD3 site only has reference to Scatter plot http://nvd3.org/ghpages/scatter.html

Answer 1

This custom nvd3 bubble chart implementation might help anyone who wants to figure out how to do it: https://github.com/enplore/nvd3-charts.