[R] Understanding position_dodge() and position_dodge2() in ggplot2

Zhenguo Zhang’s Blog https://fortune9.netlify.app/2026/08/30/r-understanding-position-dodge-and-position-dodge2-in-ggplot2/ -

In ggplot2, when displaying grouped data along categorical axes (such as grouped bar charts, boxplots, or error bars), horiz…