Figure 4.20 - Array options
At the top, you have the Count that controls the number of copies. There
are three main types of methods available for duplicating models:
Fixed count: Uses a relative size for the selected object. For
instance, in the distance, you will enter the value two, and it will
use two times the size of your object as a distance.
Fit length: Here, you get absolute distances. If you use a value of
2, the copies will stay at two units from each other regardless of
the object size.
Fit Curve: You can also use a curve object to control the size. You
can create a curve with the SHIFT+A keys and choose the Curve
group.