| % File src/library/datasets/man/WorldPhones.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2007 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{WorldPhones} |
| \docType{data} |
| \alias{WorldPhones} |
| \title{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) \emph{The World's Telephones}. |
| } |
| \references{ |
| McNeil, D. R. (1977) |
| \emph{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") |
| } |
| \keyword{datasets} |