Boxplots with violins

Displays of boxplot and combines it with a violin plot, using ggplot2.

ggassoc_boxplot(data, mapping, 
na.rm.cat = FALSE, na.value.cat = "NA", na.rm.cont = FALSE,
axes.labs = TRUE, ticks.labs = TRUE, text.size = 3,
sort = FALSE, box = TRUE, notch = FALSE, violin = TRUE)

Arguments

data

dataset to use for plot

mapping

aesthetic being used. It must specify x and y.

na.rm.cat

logical, indicating whether NA values in the categorical variable (i.e. x) should be silently removed before the computation proceeds. If FALSE (default), an additional level is added to the categorical variable (see na.value.cat argument).

na.value.cat

character. Name of the level for NA category. Default is "NA". Only used if na.rm = FALSE.

na.rm.cont

logical, indicating whether NA values in the continuous variable (i.e. y) should be silently removed before the computation proceeds. Default is FALSE.

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.

sort

logical. If TRUE, the levels of the categorical variable are reordered according to the conditional medians, so that boxplots are sorted. Default is FALSE.

box

Whether to draw boxplots. Default is TRUE.

notch

If FALSE (default) make a standard box plot. If TRUE, make a notched box plot. Notches are used to compare groups; if the notches of two boxes do not overlap, this suggests that the medians are significantly different.

violin

Whether to draw a violin plot. Default is TRUE.

Details

Eta-squared 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

Nicolas Robette

Examples

data(Movies)
ggassoc_boxplot(Movies, mapping = ggplot2::aes(x = Critics, y = ArtHouse))
#> Warning: Solution may be nonunique
#> Warning: Solution may be nonunique