The World's Telephones

Description

The number of telephones in various regions of the world (in thousands).

Usage

WorldPhones

Format

A matrix with 7 rows and 8 columns. The columns of the matrix give the figures for a given region, and the rows the figures for a year.

The regions are: North America, Europe, Asia, South America, Oceania, Africa, Central America.

The years are: 1951, 1956, 1957, 1958, 1959, 1960, 1961.

Source

AT&T (1961) The World's Telephones.

References

McNeil, D. R. (1977) Interactive Data Analysis. New York: Wiley.

Examples

require(graphics)
matplot(rownames(WorldPhones), WorldPhones, type = "b", log = "y",
        xlab = "Year", ylab = "Number of telephones (1000's)")
legend(1951.5, 80000, colnames(WorldPhones), col = 1:6, lty = 1:5,
       pch = rep(21, 7))
title(main = "World phones data: log scale for response")

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)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(datasets)
> png(filename="/home/ddbj/snapshot/RGM3/R_rel/result/datasets/WorldPhones.Rd_%03d_medium.png", width=480, height=480)
> ### Name: WorldPhones
> ### Title: The World's Telephones
> ### Aliases: WorldPhones
> ### Keywords: datasets
> 
> ### ** Examples
> 
> require(graphics)
> matplot(rownames(WorldPhones), WorldPhones, type = "b", log = "y",
+         xlab = "Year", ylab = "Number of telephones (1000's)")
> legend(1951.5, 80000, colnames(WorldPhones), col = 1:6, lty = 1:5,
+        pch = rep(21, 7))
> title(main = "World phones data: log scale for response")
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>