A cross between a 2D density plot and a scatter plot,
    implemented as a 'ggplot2' geom. Points in the scatter plot are 
    colored by the number of neighboring points. This is useful to
    visualize the 2D-distribution of points in case of overplotting.

A collection of layers for 'ggplot2'. Provides geoms built on
    linear and radial gradients from the 'grid' package, giving areas, bars,
    paths, rectangles, and ridgelines a fading or glowing visual effect.
    Also includes mathematically driven layers — catenary curves, 
    Chaikin's corner-cutting smoothing
    (Chaikin, 1974, <doi:10.1016/0146-664X(74)90028-8>), and Fourier-series
    reconstruction — plus Lexis diagrams, isotype bar charts.

Provides basic graphing functions to fully demonstrate
    point-to-point connections in a polar coordinate space.

Tools for working with polygons with holes in 'ggplot2', with a
    new 'geom' for drawing a 'polypath' applying the 'evenodd' or 'winding'
    rules.

Create engaging population and point plots charts in R. 'ggpop' allows users to represent population data and points proportionally using customizable icons, facilitating the creation of circular representative population charts as well as any point-plots.

Provides statistical power analysis and sample size calculations
    for t-tests, ANOVA, regression, chi-square, proportion, correlation,
    nonparametric, biomarker, and clinical trial designs. Includes a
    scriptable API via power_compute(), publication-ready 'ggplot2'
    visualizations, and an optional 'Shiny' application.

Extensions to 'ggplot2' respecting the grammar of graphics 
    paradigm. Geometries: geom_table(), geom_plot() and geom_grob() add insets to 
    plots using native data coordinates, while geom_table_npc(), geom_plot_npc()
    and geom_grob_npc() do the same using "npc" coordinates through new 
    aesthetics "npcx" and "npcy". Statistics: select observations based on 2D 
    density. Positions: radial nudging away from a center point and nudging away
    from a line or curve; combined stacking and nudging; combined dodging and
    nudging.