R ggplot2 boxplot - varying box width by a function/vector values

Question

I have a data frame with several groups values, and I would like to have a boxplot per category (drawn together). I want to have each boxplot with a different width, based

Answer 1

There is the possibility to weight each box plot via the weight aesthetics. You need to have the quantreg package installed to use this. I guess you can just provide your function in there, I used for demonstration an exponent of the drivesCount column. So you need to adapt this a little.

install.packages("quantreg")
ggplot(Data, aes(x=roadType, y=happyPercentage)) +
  geom_boxplot(varwidth = TRUE, alpha=0.2, aes(weight=drivesCount^10)) +
  theme(legend.position="none") +
  labs(x = "Road Type", y = "Happy People Percent") +
  theme(plot.title = element_text(hjust = 0.5))