“Quilting is mostly singing,” according to Nettie Young of Gee’s Bend, Alabama. Like singing, quilting is often a communal activity. Quilters gather to cut, piece, and stitch layers of fabric together ...

Hexagonal binning is useful for aggregating data into a coarser representation for display. For example, rather than rendering a scatterplot of tens of thousands of points, bin the points into a few ...