在ggplot2中将旋转轴标题右对齐

Question

如何将Y轴标题（“种类”）与轴标签（三个种类名称）右对齐，以使轴标题靠近灰色面板？ hjust似乎不会影响该职位。

library(ggplot2)

ggplot(iris,
       aes(x = Species,
           y = Sepal.Width)) +
  geom_boxplot() +
  labs(x = "Species",
      y = "Sepal Width") +
  coord_flip() +
  theme(axis.title.y = element_text(angle = 0, hjust = 0))

Answer 1

您可以将geom_text与clip = "off"中的coord_flip()一起使用，这将允许在绘图面板之外绘制绘图元素。显然，您必须使用x和y才能通过此手动方法获得所需的输出

library(ggplot2)

p <- ggplot(iris,
       aes(x = Species,
           y = Sepal.Width)) +
  geom_boxplot() +
  labs(x = NULL,
       y = "Sepal Width") +
  coord_flip(clip = "off") + # add clip = off here
  theme(axis.title.y = element_text(angle = 0, hjust = 0))

p +
  # add axis title here
  geom_text(
    x = 3.5,
    y = 1.85,
    inherit.aes = FALSE,
    label = "Species",
    check_overlap = TRUE,
    hjust = 1,
    fontface = 'bold',
    size = 5
  ) +
  theme(plot.margin = unit(c(1, 1, 1, 2), "lines"))

^{由reprex package（v0.2.1）于2018-10-27创建}