You can control the scale of the axis.
The function seq() is convenient when you need to create a sequence of number. The basic syntax is:
seq(begin, last, by = x)
- begin: First number of the sequence
- last: Last number of the sequence
- by= x: The step. For instance, if x is 2, the code adds 2 to `begin-1` until it reaches `last`
For instance, if you want to create a range from 0 to 12 with a step of 3, you will have four numbers, 0 4 8 12