Useful functions and utilities for 'ggplot' object (e.g., geometric layers, themes, and utilities to edit the object).

Provides a range of filters that can be applied to layers from the 
    'ggplot2' package and its extensions, along with other graphic elements such 
    as guides and theme elements. The filters are applied at render time and 
    thus uses the exact pixel dimensions needed.

The function gggap() streamlines the creation of segments on
    the y-axis of 'ggplot2' plots which is otherwise not a trivial task to
    accomplish.

A 'ggplot2' extension for drawing gene arrow maps.

Creates a reproducible 'ggplot2' object by storing the data and calls.

Moon charts are like pie charts except that the proportions are
    shown as crescent or gibbous portions of a circle, like the lit and unlit
    portions of the moon. As such, they work best with only one or two groups.
    'gggibbous' extends 'ggplot2' to allow for plotting multiple moon charts in
    a single panel and does not require a square coordinate system.

An extension of 'ggplot2' that makes it easy to add
             raw 'grid' output, such as customised annotations, to a 
             'ggplot2' plot.

A 'ggplot2' extension that does a variety of little
    helpful things.  The package extends 'ggplot2' facets through
    customisation, by setting individual scales per panel, resizing panels
    and providing nested facets.  Also allows multiple colour and fill
    scales per plot. Also hosts a smaller collection of stats, geoms and axis 
    guides.

Reproduce the halfnorm() function found in the 'faraway' package 
    using the 'ggplot2' API.

A 'ggplot2' extension for easy plotting of half-half geom combinations. Think half boxplot and half jitterplot, or half violinplot and half dotplot.

A Humanitarian Data Exchange (HDX) theme, color palettes, and
    scales for 'ggplot2' to allow users to easily follow the HDX visual design
    guide, including convenience functions for for loading and using the
    Source Sans 3 font.