There is a kind of (pretty simple) visualization we use a lot in my office, but none of us knows what it's called:
The idea is that the second bar drills down into the indicated data from the first bar. As pictured here, 69% of the first bar is highlighted. The second bar shows that 76% of that initial 69% is highlighted, and so on.
We usually call these "engagement funnels", but searching online for that term pulls up a very different visualization. I'm asking because I'd like to build a tool to auto-generate them (likely with a library like d3) but want to know if others are already doing that...
Is there a standard name for this type of display?
(Bonus: do you know of a library or plugin that generates them already?)