Fig. 1. Exploring Small Multiples through Visual Piling. (A) An example of thousands of necklace sketches from Google Quickdraw [25] displayed as small multiples. The interactive arrangement, grouping, and aggregation of small multiples into piles support the discovery and comparison of reoccurring patterns. (B) Other types of small multiple visualizations grouped and aggregated into piles, including (from left to right) natural and immunofluorescence microscopy images, matrices, area charts, and scatterplots.