如何在 R 的条形图中添加线段？

Question

This is likely a very easy question, but I'm not great with R and haven't found a simple answer elsewhere on the internet.

I want to add a line segment connecting the two points in this stripchart, but cannot figure out how to do so.

stripchart(c(0.5, 1.5), pch = "+")

Any help would be much appreciated!

Answer 1

Create a data frame or vectors with the coordinates for the line and plot with lines

df1 <- data.frame(x = c(0.5, 1.5),
                  y = 1)

stripchart(c(0.5, 1.5), pch = "+")
lines(df1$x, df1$y)

^{Created on 2021-12-18 by the reprex package (v2.0.1)}