circular (version 0.4-93)

fisherB20: B.20 Movements of blue periwinkles.

Description

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.

References

N.I. Fisher (1993) Statistical analysis of circular data. Cambridge University Press.

Examples

# NOT RUN {
data(fisherB20)
data(fisherB20c)
par(mfcol=c(1,3))
plot(fisherB20c$theta, xlab=expression(theta))
boxplot(fisherB20c$x, xlab="x")
plot(c(fisherB20$x, fisherB20$x), c(fisherB20$theta,
  fisherB20$theta+360), xlab="x", ylab=expression(theta))

# }