Customizing axis annotation

Some other useful sub-components of the scales argument are:

tick.number: approximate number of tick marks / labels.
alternating: 1 puts labels on the left/bottom boundary, 2 on the right/top, and 3 on both sides. The value can be a vector, in which case it applies row-wise or column-wise.
rot: angle in degrees to rotate axis labels. *

100 XP

The USMortality dataset has been pre-loaded.

Modify the following call so that