| Popis: |
Circular data occur when the sample space is the unit circle. The peculiarity of a circular measurement scale is that its beginning and its end coincide. After both an origin and an orientation have been chosen, a circular observation can be measured, in radians, by an angle θ ∈ [−pi, pi). Circular data often arise in biology (migration paths, flight directions of animals), meteorology (wind and marine current directions), and geology (orientations of joints and faults, landforms, oriented stones). For comprehensive accounts see, for example, [9] and [1]. |
