Plotting categorical variables
The Basics of ggplot2 :: Environmental Computing
Parallel Coordinate Plots for Discrete and Categorical Data in R — A Comparison | WZB Data Science Blog
r - Barplot with ggplot 2 of two categorical variable facet_wrap according a third variable displayng percentage - Stack Overflow
Visualizing categorical data in mosaic with R – Jean-Etienne's blog
Plot Grouped Data: Box plot, Bar Plot and More - Articles - STHDA
R Assign Fixed Colors to Categorical Variable in ggplot2 Plot (Example)
More on Categorical Data
Four ways to supercharge your scatterplots
10 Questions R Users always ask while using ggplot2 package
Data Visualization using ggplot2
r - Order categorical data in a stacked bar plot with ggplot2 - Stack Overflow
More on Categorical Data
Visualizing Multivariate Categorical Data - Articles - STHDA
ggplot Extension Course: Plotting categorical data with ggplot2
ggplot2 - How to plot 3 categorical variables in R ggplot - Stack Overflow
How to Assign Colors to Categorical Variable in ggplot2 Plot in R ? - GeeksforGeeks
ggplot Extension Course: Plotting categorical data with ggplot2
Scatter plot by group in ggplot2 | R CHARTS
How to Create and Customize Bar Plot Using ggplot2 Package in R - One Zero Blog
Handling Categorical Data in R – Part 4 | R-bloggers
r - How can you visualize the relationship between 3 categorical variables? - Cross Validated
Barplot-For two categorical variables using ggplot2 in R - YouTube
Alluvial Plots in ggplot2
