| % File src/library/datasets/man/sunspots.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2014 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{sunspots} |
| \docType{data} |
| \alias{sunspots} |
| \title{Monthly Sunspot Numbers, 1749--1983} |
| \description{ |
| Monthly mean relative sunspot numbers from 1749 to 1983. Collected at |
| Swiss Federal Observatory, Zurich until 1960, then Tokyo Astronomical |
| Observatory. |
| } |
| \usage{sunspots} |
| \format{ |
| A time series of monthly data from 1749 to 1983. |
| } |
| \source{ |
| Andrews, D. F. and Herzberg, A. M. (1985) |
| \emph{Data: A Collection of Problems from Many Fields for the |
| Student and Research Worker}. |
| New York: Springer-Verlag. |
| } |
| \seealso{ |
| \code{\link{sunspot.month}} has a longer (and a bit different) series, |
| \code{\link{sunspot.year}} is a much shorter one. See there for |
| getting more current sunspot numbers. |
| } |
| \examples{ |
| require(graphics) |
| plot(sunspots, main = "sunspots data", xlab = "Year", |
| ylab = "Monthly sunspot numbers") |
| } |
| \keyword{datasets} |