A variety of graphs have been devised for categorical and compositional data, ranging from widely familiar to more unusual displays. Both official Stata commands and user-written programs are available. After a stacking trick for binary responses is explained, bar charts and related displays for...

Conventions about what information goes on each axis of a two-way plot are precisely that, conventions. This column discusses—historically, syntactically, and by example-the idea that flouting convention in various ways can lead to small but useful improvements in graph display. Putting y-axis...