Left justify text from multi-line facet labels

Question

I\'m using facet_grid() to display some data, and I have facet labels that span multiple lines of text (they contain the "\\n" character).

require(g         


        

Answer 1

Until someone comes along with a real solution, here's a hack: Add space in the labels to get the justification you want.

require(ggplot2)

#Generate example data
set.seed(3)
df = data.frame(facet_label_text = rep(c("Label A",
                                         "Label B           \nvery long label",
                                         "Label C\nshort     ",
                                         "Label D"),
                                       each = 5),
                time = rep(c(0, 4, 8, 12, 16), times = 4),
                value = runif(20, min=0, max=100))

#Plot test data
ggplot(df, aes(x = time, y = value)) +
  geom_line() +
  facet_grid(facet_label_text ~ .) +
  theme(strip.text.y = element_text(angle = 0, hjust = 0))