ggassoc_crosstab: Plots counts and associations of a crosstabulation

In GDAtools: A Toolbox for Geometric Data Analysis and More

Plots counts and associations of a crosstabulation

Description

For a cross-tabulation, plots the number of observations by using rectangles with proportional areas, and the phi measures of association between the categories with a diverging gradient of colour, using ggplot2.

Usage

ggassoc_crosstab(data, mapping, max.phi=.8, sort="none", 
axes.labs=TRUE, ticks.labs=TRUE, text.size=3)

Arguments

data	dataset to use for plot
mapping	aesthetic being used. It must specify x and y.
max.phi	numeric value, specifying the lower and upper limit of the scale for the color gradient filling the rectangles, i.e. for the phi measures of association. It corresponds to the maximum absolute value of phi one wants to represent in the plot.
sort	character. If "both", rows and columns are sorted according to the first factor of a correspondence analysis of the contingency table. If "x", only rows are sorted. If "y", only columns are sorted. If "none" (default), no sorting is done.
axes.labs	Whether to display the labels of the axes, i.e. the names of x and y. Default is TRUE.
ticks.labs	Whether to display the labels of the categories of x and y. Default is TRUE.
text.size	Size of the association measure. If NULL, the text is not added to the plot.

Details

The phi measure of association measures how much each combination of categories of x and y is over/under-represented.

Cramer's V measure of global association between x and y is displayed in upper-left corner of the plot.

This function can be used as a high-level plot with ggduo and ggpairs functions of the GGally package.

Value

a ggplot object

Author(s)

Nicolas Robette

See Also

assoc.twocat, phi.table, catdesc, assoc.yx, darma, ggassoc_phiplot, ggpairs

Examples

data(Taste)
ggassoc_crosstab(data=Taste, mapping=ggplot2::aes(x=Age, y=Classical))

GDAtools documentation built on March 18, 2022, 5:13 p.m.