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
>