Data visualization with ggplot2 based on Kieran Healy's "Data Visualization: A Practical Introduction" (2nd ed., 2026). Use when creating, reviewing, or improving ggplot2 visualizations, choosing appropriate chart types, applying perceptual principles, faceting and grouping data, labeling and annotating plots, visualizing model results, drawing maps, or polishing figures for publication. Covers the grammar of graphics workflow, visual perception, color palettes, layered plot construction, and theme customization.
2026-04-30