Distances 'x' and directions 'theta' by small blue periwinkles, Nodilittorina unifasciata, after they had been transplanted downshore from the height at which they normaly live.
Usage
data(fisherB20)
data(fisherB20c)
Format
fisherB20 is a data.frame of integer value.
fisherB20c is a data.frame that contains the same observations, but in the first column, the data is a circular object.
Source
N.I. Fisher (1993) pag. 252-253. Data kindly supplied by Dr A. Underwood and Ms G. Chapman.
References
N.I. Fisher (1993) Statistical analysis of circular data. Cambridge University Press.