You can use visual encodings like color, shape, size and alpha to encode a third variable. The choice of encodings depends on whether the third variable is continuous or discrete. For example, If ...

This is a tutorial for getting started using ggplot2 to make plots in R. This tutorial has not been updated since 2016. See ggplot_presentation.html for slides.

A new R package creates a simple graphical user interface for ggplot2—and it generates R code for the visualization you create Some R users become leery of graphical user interfaces. Pointing and ...