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")

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> library(Blossom)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/Blossom/rao.Rd_%03d_medium.png", width=480, height=480)
> ### Name: rao
> ### Title: Circular orientation of homing pigeons (Rao 1976)
> ### Aliases: rao
> ### Keywords: datasets
> 
> ### ** Examples
> 
> 
> str(rao)
'data.frame':	10 obs. of  1 variable:
 $ angl: int  20 35 350 120 85 345 80 320 280 85
> 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")
> 
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>