In R, how do I make a (bar)plot's y axis labels parallel to the X axis instead of parallel to the Y axis?
Not sure if this is what you mean, but try setting
las=1. Here's an example:
require(grDevices) tN <- table(Ni <- stats::rpois(100, lambda=5)) r <- barplot(tN, col=rainbow(20), las=1)
That represents the style of axis labels. (0=parallel, 1=all horizontal, 2=all perpendicular to axis, 3=all vertical)