在ggplot2中将旋转的轴标题右对齐 [英] Right align rotated axis title in ggplot2

问题描述

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似乎不影响位置.

How do I right-align the Y-axis title ("Species") with the axis labels (the three species names), such that the axis title is close to the gray panel? hjust does not seem to affect the position.

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))

推荐答案

您可以在coord_flip()中将geom_text与clip = "off"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

You can use geom_text together with clip = "off" inside coord_flip() which will allow drawing plot element outside of the plot panel. Obviously you will have to play around with x and y to get the desired output with this manual method

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软件包(v0.2.1)}

^{Created on 2018-10-27 by the reprex package (v0.2.1)}

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