B.11 Movements of sea stars
Resultant directions of 22 sea stars 11 days after being displaced from their natural habitat.
data(fisherB11) data(fisherB11c)
fisherB11 a vector of 22 observations (in degrees).
fisherB11c contains the same observations in a circular objects.
G.J.G. Upton and B. Fingleton (1989) Spatial Data Analysis by Example. Volume 2. Categorical and Directional Data. New York: John Wiley as adapted from B. Pabst and H. Vicentini (1978) Dislocation experiments in the migrating seastar. Astropecten jonstoni. Marine Biology 48, 271-8.
N.I. Fisher (1993) Statistical analysis of circular data. Cambridge University Press. Pag. 245.
data(fisherB11c) plot(fisherB11c, stack=TRUE, shrink=1.5)
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