This chart extends the previous most basic boxplot described in graph #262.
It describes the option you can apply to the
geom_boxplot() function to custom the general chart
appearance.
Note on notches: useful to compare groups: if no overlap between 2 groups, medians are significantly different.
# Load ggplot2
library(ggplot2)
# The mpg dataset is natively available
#head(mpg)
# geom_boxplot proposes several arguments to custom appearance
ggplot(mpg, aes(x=class, y=hwy)) +
geom_boxplot(
# custom boxes
color="blue",
fill="blue",
alpha=0.2,
# Notch?
notch=TRUE,
notchwidth = 0.8,
# custom outliers
outlier.colour="red",
outlier.fill="red",
outlier.size=3
)
