rao: Circular orientation of homing pigeons (Rao 1976)

Description Usage Format Source Examples

Description

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

Usage

1

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

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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")

Blossom documentation built on May 29, 2017, 10:55 p.m.