How to Plot Grouped Data Using ggplot2 Library in R for Effective Data Visualization

Rotating X-Axis Labels in ggplot2 Facet Graphs: A Practical Solution for Improving Readability

Flipping ggplot2 Facets for a Cleaner Plot

Understanding the Issue with ggplot's geom_bar() and Level 0 of a Factor: How to Plot Levels in R Without Missing Values

Combining Two Types of Lines in ggplot2: A Base R and ggplot2 Solution