Align violin plots with dodged box plots

Question

I have this data frame

set.seed(1234)
x <- rnorm(80, 5, 1)
df <- data.frame(groups = c(rep("group1",20),
                           rep("         


        

Answer 1

You need to set the width of the dodging explicitly for both geoms:

dodge <- position_dodge(width = 0.4)

ggplot(data = df, aes(x = groups, y = value, fill = type)) +
  geom_violin(position = dodge)+
  geom_boxplot(width=.1, outlier.colour=NA, position = dodge)