Merging Legends in ggplot2: A Single Legend for Multiple Scales

Manipulating Labels, Legends, Spacing in Parallel Coordinate Plots with grid.arrange

Creating a Strip Plot with Seaborn: A Guide to Overcoming Legend Removal Errors

ggplot2 Histogram Legend Too Large: Understanding the Issue and Solutions

Missing Legends in ggplot2 and geom_line

Extracting Coefficient Value from Legend in R Plots

How to Customize the Legend of a Bubble Map using Leaflet in R