Obtaining Left and Right Arrows As Plot Symbols in R

Question

I have a data set that I would like to plot in R that contains a factor with categories of "left" and "right". I'd like to use plot symbols that somehow indicate direction, with a simple solution being triangles that point left and right. However, the standard symbol list in R only includes triangles that point up and down (pch = 2,6 or 24,25 for example, with a complete symbol list here). What's the most straightforward method of plotting triangles that point left and right?

Note: I've tried using < and > from the ascii set (pch = 60 and 62), although I'd like symbols that have better visibility because I'll eventually be using these figures on a projector. I'll fall back on these symbols if there isn't a better solution.

Answer 1

plot(x=0, type="n")
text(1, .5, paste0("0.5", intToUtf8(9660)))
text(1, -.5, paste0("-0.5", intToUtf8(9650)))

Left: 9664, right: 9654