dragonfly {NPCirc} | R Documentation |
The data, presented in Batschelet (1981), consists on the orientation of 214 dragonflies with respect to the sun's azimuth.
data(dragonfly)
A single-column data frame with 214 observations in radians.
Data were originally recorded in degrees.
Batschelet, E. (1981) Circular Statistics in Biology. Academic Press, New York.
data(dragonfly)
x <- circular(dragonfly$orientation)
dens <- kern.den.circ(x)
plot(dens, shrink=1.3)