# ggmosaic v0.2.0

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## Mosaic Plots in the 'ggplot2' Framework

Mosaic plots in the 'ggplot2' framework. Mosaic plot functionality is provided in a single 'ggplot2' layer by calling the geom 'mosaic'.

# ggmosaic

ggmosaic was designed to create visualizations of categorical data and is capable of producing bar charts, stacked bar charts, mosaic plots, and double decker plots.

## Installation

You can install ggmosaic from github with:

# install.packages("devtools")
devtools::install_github("haleyjeppson/ggmosaic")


## Example

library(ggmosaic)
ggplot(data = fly) +
geom_mosaic(aes(x = product(RudeToRecline), fill=DoYouRecline))


## geom_mosaic: setting the aesthetics

Aesthetics that can be set:

• weight : select a weighting variable
• x : select variables to add to formula
• declared as x = product(x1, x2, …)
• fill : select a variable to be filled
• if the variable is not also called in x, it will be added to the formula in the first position
• conds : select a variable to condition on
• declared as conds = product(cond1, cond2, …)

These values are then sent through productplots functions to create the formula for the desired distribution

Formula: weight ~ fill + x | conds

### From the aesthetics to the formula

Example of how the formula is built

• weight = 1
• x = product(Y, X)
• fill = W
• conds = product(Z)

These aesthetics set up the formula for the distribution: 1 ~ W + X + Y | Z

Because a mosaic plot is constructed hierarchically through alternating spines, the ordering of the variables is very important.

## Functions in ggmosaic

 Name Description mosaic Template for a mosaic plot. A mosaic plot is composed of spines in alternating directions. scale_type.tbl_df Helper function for determining scales product Wrapper for a list scale_type.product Helper function that ggplot2 needs for determining scales on x and y geom_mosaic Mosaic plots. vspine Vertical spine partition: width constant, height varies. vbar Vertical bar partition: height constant, width varies. spine Spine partition: divide longest dimension. scale_type.productlist Helper function for determining scales squeeze Internal helper function scale_x_productlist Determining scales for mosaics ddecker Template for a double decker plot. A double decker plot is composed of a sequence of spines in the same direction, with the final spine in the opposite direction. hbar Horizontal bar partition: width constant, height varies. hspine Horizontal spine partition: height constant, width varies. StatMosaic Geom proto prodcalc Calculate frequencies. happy Data related to happiness from the general social survey. fly Flying Etiquette Survey Data No Results!