ggplotで縦線・横線を描く
code:R
# 縦線
geom_vline(xintercept=as.Date("2021-12-01"), linetype='dotted', color='red') +
# 横線
geom_vline(yintercept=100, linetype='dotted', color='red') +
ggplot2 add straight lines to a plot : horizontal, vertical and regression lines - Easy Guides - Wiki - STHDA
ggplot
horizontal, vertical line
R
public