Plot multiple series of data into a single bagplot with R

Question

Let\'s condsider the bagplot example as included in the aplpack library in R. A bagplot is a bivariate generalisation of a boxplot and therefore gives insight in the distrib

Answer 1

If we modify some of the aplpack::bagplot code we can make a new geom for ggplot2. Then we can compare groups within a dataset in the usual ggplot2 ways. Here's one example:

library(ggplot2)
ggplot(iris, aes(Sepal.Length, Sepal.Width, 
                 colour = Species, fill = Species)) +
       geom_bag() +
       theme_minimal()

and we can show the points with the bagplot:

ggplot(iris, aes(Sepal.Length, Sepal.Width, 
                     colour = Species, fill = Species)) +
           geom_bag() +
           geom_point() + 
           theme_minimal()

Here's the code for the geom_bag and modified aplpack::bagplot function: https://gist.github.com/benmarwick/00772ccea2dd0b0f1745