

   phones {base}                                R Documentation

   TThhee WWoorrlldd''ss TTeelleepphhoonneess

   DDeessccrriippttiioonn::

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

   UUssaaggee::

        data(phones)

   FFoorrmmaatt::

        A matrix with 7 rows and 8 columns.

   DDeettaaiillss::

        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.

   SSoouurrccee::

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

   RReeffeerreenncceess::

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

   EExxaammpplleess::

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

