Part8 ggplot2
- Graphing package inspired by the Grammar of Graphics work of Leland Wilkinson: 
- The Grammar of Graphics is based on the idea that every graphic can be broken down into a series of components or layers. These components include the data, the aesthetic mapping, the geometric shapes, the statistical transformation, and the scales. source 
- Flexible, versatile, customizable. 
- Well documented. 

image from https://www.cedricscherer.com/img/ggplot-tutorial/overview.png