Single column stacked bar chart in dc.js

问题

I've been working with dc.js and quite enjoyed the multiple time series, visualised as stacked charts.

However, I cannot figure out how to do a single-column stacked chart.

My dataset details air strikes. One row per strike, identifying a country, location, and all that stuff.

The idea is to have on a single column a stacks of different importance (area) depending on the number of strikes by each country. Such as in this image:

Thanks so much for your help!

来源：https://stackoverflow.com/questions/27508043/single-column-stacked-bar-chart-in-dc-js