The document discusses creating interactive and 3D scatterplots in R. It shows how to create linked scatterplots, histograms, and boxplots that update interactively when points are selected. The document also demonstrates how to create basic 3D scatterplots of iris data with coloring and drop lines, and to overlay a regression plane on the 3D scatterplot. The examples use the iplots, scatterplot3D, and lm packages in R to generate the interactive and 3D visualizations.