Kristian Larsen has a quick demo of three R visualization packages, ggplot2, dygraphs, and plotly:
Another value generating visualisation package in R is
dygraphs. This package focuses on creating interactive visualisations with elegant interactive coding modules. Furthermore, the package specialises in creating visualisations for machine learning methods. The below coding generates different visualisation graphs with
Three useful libraries to learn. Two more which might be useful are ggvis and rbokeh.