Cycles Rain Seasons In Size by Andrew McNutt
This graphic tells a small story about bicycle ridership in Seattle. It does so with a line chart, a sunburst, and a novel chart type: table cartograms (TGRAM) in a treemap. The TGRAM encodes tabular data as the areas of cells in a grid while keeping their grid-topology; this gives the cells their irregular shapes. Each of the months is made into a TGRAM and then arranged in a treemap. This reveals many trends at once: casual vs commute riding, summer vs winter, and ridership during holidays.