The Grammar of Graphics (the ‘gg’ in the ‘ggplot2’)
Hadley Wickham is the author of several popular R packages and an employee of R Studio. In developing his graphical plotting package for R, called ggplot2, he has applied many of the ideas in Leland Wilkinson’s influential Grammar of Graphics concept and book. This 2010 article “A Layered Grammar of Graphics” explains ggplot2 and how it uses the Grammar of Graphics idea for R. Hadley has also written his own ggplot2 book.
ggplot2 is one of several packages found in the set of R extensions known as the tidy verse.