Neat. Was some tool used to construct this, or was it done manually? What may not be obvious to people initially when they look at it, is that when you see the label "Department of Finance" on the gray rectangle that is actually the label for the gray rectangle plus the green and orange ones adjacent to it -- the different colors represent the expenditure classes described on the "About" page. It would perhaps be cle…
The treemap was made using D3 with some customizations. All the source and datasets are on github. The department groupings are done with spacing. They are subtle, I know. Right at this moment, I am adding color coding to the About modal.
Mind sharing the github link?