ggplot2 - 添加具有不同中断和标签的辅助y轴

Question

是否可以使用ggplot2？

手动将断点和标签添加到辅助y轴

（见右下角）

我希望在右侧y轴上有更紧凑的断点，代表条形。

Answer 1

这个图表将是基本情况，然后我将展示如何更改次要y轴上的断点和标签：

sapply(c("pipeR", "ggplot2"), require, character.only = TRUE)

data(swiss)
swiss %>>% ggplot() + 
  geom_bar(mapping = aes(x = Agriculture, y = Fertility * 30 / 400), stat = "identity", colour = gray(0.5), fill = gray(0.5)) + 
  geom_line(mapping = aes(x = Agriculture, y = Education)) + 
  geom_point(mapping = aes(x = Agriculture, y = Education), size = 3, shape = 21, fill = "white") + 
  scale_x_continuous() + 
  scale_y_continuous(
    name = expression("Education"), 
    sec.axis = sec_axis(~ . * 400 / 30 , name = "Fertility"), 
    limits = c(0, 30)) + 
  theme_bw() + 
  theme(
    panel.grid.major = element_blank(), 
    panel.grid.minor = element_blank()
  )

更改休息时间：

swiss %>>% ggplot() + 
  geom_bar(mapping = aes(x = Agriculture, y = Fertility * 30 / 400), stat = "identity", colour = gray(0.5), fill = gray(0.5)) + 
  geom_line(mapping = aes(x = Agriculture, y = Education)) + 
  geom_point(mapping = aes(x = Agriculture, y = Education), size = 3, shape = 21, fill = "white") + 
  scale_x_continuous() + 
  scale_y_continuous(
    name = expression("Education"), 
    sec.axis = sec_axis(~ . * 400 / 30 , name = "Fertility", breaks = seq(1,1000,10)), 
    limits = c(0, 30)) + 
  theme_bw() + 
  theme(
    panel.grid.major = element_blank(), 
    panel.grid.minor = element_blank()
  )

更改标签：

swiss %>>% ggplot() + 
  geom_bar(mapping = aes(x = Agriculture, y = Fertility * 30 / 400), stat = "identity", colour = gray(0.5), fill = gray(0.5)) + 
  geom_line(mapping = aes(x = Agriculture, y = Education)) + 
  geom_point(mapping = aes(x = Agriculture, y = Education), size = 3, shape = 21, fill = "white") + 
  scale_x_continuous() + 
  scale_y_continuous(
    name = expression("Education"), 
    sec.axis = sec_axis(~ . * 400 / 30 , name = "Fertility", breaks = seq(1,1000,10), labels=rep("x",length(seq(1,1000,10)))), 
    limits = c(0, 30)) + 
  theme_bw() + 
  theme(
    panel.grid.major = element_blank(), 
    panel.grid.minor = element_blank()
  )

有用的链接：https://whatalnk.github.io/r-tips/ggplot2-secondary-y-axis.nb.html