Conventional wisdom says that an executive dashboard must fit on a single page or screen. The argument hinges on a pair of assertions about this constraint: it provides necessary discipline to focus on only the most critical information; and it enables the audience to see results "at a glance."

In the information visualization world, treemaps are on the rise…and justifiably so. Treemaps simultaneously show the big picture, comparisons of related items, and allow easy navigation to the details.