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 … Continue reading R extensions: Grammar of Graphics, tidyverse and ggplot2