Ridgeline plots (also known as joyplots) display multiple overlapping density plots, typically arranged by category. They are particularly effective for visualizing how the distribution of a variable changes across different groups or over time.
For instance, a ridgeline plot might show the distribution of customer satisfaction scores by month, revealing seasonal trends or outliers in sentiment. The vertical alignment and partial overlap make it easy to spot shifts, peaks, and similarities between categories.
Ridgeline plots are visually striking and work well in storytelling and presentations. However, they require thoughtful design choices to remain legible and informative, especially with many groups.