Not sure what this means, but las = 1
. Here's an example:
is required (grDevices) tN & lt; - Table (Ni & lt; - Statistics :: rpois (100, lambda = 5)) barplot (tn, col = rainbow (20), las = 1)
This axis represents the style of the label (0 = parallel, 1 = all horizontal, 2 = all vertical axis, 3 = all vertical)