Expandable Tree

For my special topics last semester I wrote about some ways to visualize architecture metrics (or any values in a hierarchical manner).

I haven't seen the expandable tree visualization before, so I wanted to document it on the interwebs before someone else does it. (Although, they probably already have)

It is basically a expandable tree widget with some added features. The different levels of the hierarchy are colored different colors to ease readability. You can get an overall view from the bars, which show the percentage of the total. The actual values are shown to the left of the system. You can drill down into the subsystems to see more information or keep a top level view.

P.S. Those numbers are completely made up and partially silly.