Marco Russo and Alberto Ferrari play the accordion:
In previous articles, we introduced the concepts of visual context, the visual lattice, and the two visual context navigation operations: EXPAND and COLLAPSE. In this article, we build on that knowledge to first compute a simple percentage over the parent: a simple calculation to consolidate the understanding of EXPAND and COLLAPSE. Next, we move on to a much more complex scenario, computing the inflation-adjusted sales using visual calculations.
Read on to see what the two functions do, using a pair of examples.