Blossom (version 1.4)

rao: Circular orientation of homing pigeons (Rao 1976)

Description

The angular degree orientation of 10 homing pigeons used by Rao (1976) for his spacing test of uniformity on a circular distribution.

Usage

data(rao)

Format

A data frame with 10 observations on the following variable.

angl

Compass orientation in degrees.

Source

Rao, J.S. 1976. Some tests based on arc-lengths for the circle. Sankhya, Series B 38,329--338.

Examples

str(rao)
par(pty = "s")
plot(c(-1.3,1.3),c(-1.4,1.4),type = "n",xaxt = "n",yaxt = "n",xlab = "",ylab = "",
  main = "Pigeon Orientation")
  symbols(x = 0, y = 0, circles = 1.1,add = TRUE,fg = seq(1:10),inch = FALSE)
  points(unlist(sin(rao*pi/180)),unlist(cos(rao*pi/180)),pch = 19,cex = 1.5)
  mtext(text = c("North","East","South","West"), side = c(3,4,1,2))

  text(x = 0,y = 1.4,"0")
  text(x = 1.2,y = 0,"90")
  text(x = 0,y = -1.4,"180")
  text(x = -1.2,y = 0,"270")