ggplot2将x轴移动到顶部(与0相反的y轴相交)

Question

我想制作一个在y = 0时反转y轴和x轴的图形.y轴与scale_y_reverse相反,但x轴保持在底部.

p <- ggplot(df, aes(x= conc, y=depth, group=factor(stn), color=factor(stn)))+
geom_point(shape=1)+
geom_path(alpha=0.5)+
scale_y_reverse(limits=(c(20,0)), expand=c(0,0))+   
scale_x_continuous(expand=c(0,0))

我尝试过这个帖子中的代码,如下所示,但没有用.

p + 
scale_x_continuous(guide = guide_axis(position = "top")) + 
scale_y_continuous(guide = guide_axis(position = "right"))

我不需要有两个x轴,只需从底部移动到顶部.

Answer 1

这在 中仍然是不可能的，但在将语法与管道结合在一起ggplot2的 中是可能的。只需使用该功能将轴放在顶部即可。ggvisggplot2dplyradd_axis

# sample data
N <- 20
df <- data.frame(conc = seq(0, N), 
                 depth = runif(N+1, 0, 20), 
                 stn = rep(1:4, length=N+1))
# ggplot version
require(ggplot2)
p <- ggplot(df, aes(x= conc, y=depth, group=factor(stn), color=factor(stn)))+
  geom_point(shape=1)+
  geom_path(alpha=0.5)+
  scale_y_reverse(limits=(c(20,0)), expand=c(0,0))+   
  scale_x_continuous(expand=c(0,0))
p
# ggvis version
require(ggvis)
df %>% transform(stn = factor(stn)) %>%
  ggvis(x = ~conc, y = ~depth, stroke = ~stn) %>%
  layer_points(shape := "circle", fill := "white") %>%
  layer_lines(opacity := 0.5) %>%
  scale_numeric("y", reverse=TRUE, domain=c(0,20), expand=c(0,0)) %>%
  scale_numeric("x", expand=c(0,0)) %>%
  add_axis("x", orient = "top")