How to drop unused categories in x axis? #32
Description
library(ggplot2)
library(lemon)
df <- data.frame(
v1 = c("A", "A", "A", "B", "B", "B"),
v2 = c("S1", "S2", "S3", "S7", "S8", "S9"),
nm = c(2, 3, 4, 5, 6, 7)
)
ggplot(df, aes(x = v2, y = nm)) +
geom_point(size = 3) +
facet_rep_grid(v1~., scales = "free_x", repeat.tick.labels = T)
