pretty(x, n=5)
pretty
returns a sequence of about n
equally spaced nice values which cover the range of the values in
x
.
The values are chosen so that they are 1, 2 or 5 times
a power of 10.
pretty(1:15) pretty(1:15 * 2) pretty(1:20) pretty(1:20, n=2) pretty(1:20, n=10)