Customizing Data Formats in Different Facets of a ggplot2 Plot

Faceting Text on Individual Panels in ggplot2: A Customizable Annotation Solution

Visualizing Multiple Response Variables with Stacked Bar Plots and Box Plots in R Using ggplot2

Facet Wraps in ggplot2: Mastering '~' and '.' for Customized Faceting Schemes

Faceting Gauge Charts in ggplot2: How to Fix Incorrect Titles and Subtitles in the First Facet Panel

Fixing Axes and Column Bar: A Solution to Overlapping Facets in ggplot2