dragonfly {NPCirc}

Orientations of dragonflies

Description

The data, presented in Batschelet (1981), consists on the orientation of 214 dragonflies with respect to the sun's azimuth.

Usage

data(dragonfly)

Format

A single-column data frame with 214 observations in radians.

Details

Data were originally recorded in degrees.

Source

Batschelet, E. (1981) Circular Statistics in Biology. Academic Press, New York.

Examples

data(dragonfly)
x <- circular(dragonfly$orientation)
dens <- kern.den.circ(x)
plot(dens, shrink=1.3)