R ggplot2 geom_jitter: plotting all zeros

Question

In R ggplot2, when I plot all zeros and use geom_jitter(), some variations are automatically added to zeros. How can I undo that? I still want all points at 0 y axis.

y = rep(0,100)

x = rep(c("A","B","C","D"),25)

D = data.frame(x,y)

library(ggplot2)

ggplot(D,aes(x=x,y=y))+geom_boxplot() + geom_jitter()

Answer 1

If you need to keep the dots and spread them horizontally, you can use geom_jitter(height = 0). This will force the vertical variation/jitter to zero, but still allows the points to "jitter" horizontally.

ggplot(D, aes(x = x, y = y)) +
    geom_boxplot() +
    geom_jitter(height = 0)