
183Animation
A third type of animation legend is a temporal circle (Figure 10.8A).
Temporal circles are similar to a temporal bar scale, but they are more com-
pact. The benet of using circles is that if you are mapping something that is
cyclical (e.g., occurring over 24 h or over the course of four seasons), it allows
you to represent time far more compactly. Also, a circular legend infers that
a process is cyclical. For example, one might represent time moving around
the outside of the circle. The circle itself might be divided into 12 months.
In the middle of the circle, the year might be placed. Every time the anima-
tion plays through t ...