在R中更改barplot（）的方向

Question

I am working on making two back-to-back barplots with the traditional graphics package in R; I have found the horiz argument to the barplot() function, but can't figure out how to flip the horizontally-oriented graph horizontally.

As an example,

barplot(mtcars$cyl, horiz = T)

gives

but what I want to make is this (with the x-axis correct, of course).

Is there a way to do this with the traditional graphics package?

Answer 1

Something like this...?

barplot(-mtcars$cyl, horiz = TRUE, axes=FALSE)
axis(1, at=-0:-8, labels=0:8)