is a flexible R package for efficiently producing high quality 2 dimensional visualisations of data and models.
The package author, Hadley Wickham, describes the package in detail in his book ggplot2: elegant graphics for data analysis
The documentation website is the best place to go for help files about the individual commands.
is a powerful package for producing interactive 3 dimensional plots in R. ‘rgl’ utilises OpenGL as its rendering backend.
Annotated Code Files
See also Code Files 2 & 3 from my Introduction to R Course
and never forget my ‘rgl’ shenanigans page for examples of 3D plots I’ve cooked up for various reasons