r - 同一轴上的两个刻度

Question

我不确定是否可以做我想做的事。我想绘制一个带有两个比例的 x 轴，如下图所示。非常感谢，

Answer 1

ggplot2版本可能如下所示:

library(ggplot2)

x = c(1,2,3,4,5, 10,20,30,40,50)
y = c(1,2,2,3,4, 2,1,3,5,5)
# You should introduce cond - condition to separate axises - by yourself
df = data.frame(x=x,y=y,cond=ifelse(x>5,"x2","x1"))

ggplot(df, aes(x,y,group=cond)) + geom_line() + geom_point(aes(shape=cond), size=4) + facet_grid(.~cond, scales="free_x")

产生这个情节: