答案 0 :(得分:1)
可以使用单个geom_segment()
完成此操作。设置一列以定义线段是垂直还是对角线。使用比例将该列分别映射到(实线,粗体,紫色)和(虚线,细线,黑色)。
library( tidyverse )
# Data
X <- tibble(
x = rep(c(100, 150, 800, 750, 850, 1250, 4300, 2300, 3300, 6100), each=2),
y = c(0,2, 4,8, 10,15, 20,45, 50,70, 80,100, 110,130, 140,160, 230,245, 280,310),
x1 = c(x[-1],0), y1 = c(y[-1],310), type=ifelse(x==x1,"vert","diag") )
# # A tibble: 20 x 5
# x y x1 y1 type
# <dbl> <dbl> <dbl> <dbl> <chr>
# 1 100 0 100 2 vert
# 2 100 2 150 4 diag
# 3 150 4 150 8 vert
# 4 150 8 800 10 diag
# ...
ggplot(X) + theme_bw() + scale_y_reverse() +
geom_segment( aes(x=x, y=y, xend=x1, yend=y1,
linetype=type, size=type, color=type) ) +
scale_linetype_manual( values=c(diag="dashed", vert="solid") ) +
scale_size_manual( values=c(diag=0.5, vert=2) ) +
scale_color_manual( values=c(diag="black", vert="darkorchid4") ) +
guides( linetype=FALSE, size=FALSE, color=FALSE ) +
xlab( "Concentration" ) + ylab( "Depth (cm)" )