Compound figures

• We can take the indivdiual plots and arrange them in rows, columns, or other, more complex arrangements, and call the entire arrangement one figure that conveys one overarching point.
• Panels may show different kinds of plots or different datasets, but they are assembled into a composite figure.
• Panels must be labeled (a, b, c, …) so one can refer to them precisely. This is needed because panels won’t have a natural grid-faceted labeling as in small multiples.
  • It is conventional to use lower or upper case letters from the Latin alphabet.