ggally: Extension to 'ggplot2'

#' Yearly batting records for all major league baseball players
#'
#' This data frame contains batting statistics for a subset of players
#' collected from \url{http://www.baseball-databank.org/}. There are a total
#' of 21,699 records, covering 1,228 players from 1871 to 2007. Only players
#' with more 15 seasons of play are included.
#'
#' @section Variables:
#' Variables:
#' \itemize{
#'  \item id, unique player id
#'  \item year, year of data
#'  \item stint
#'  \item team, team played for
#'  \item lg, league
#'  \item g, number of games
#'  \item ab, number of times at bat
#'  \item r, number of runs
#'  \item h, hits, times reached base because of a batted, fair ball without
#'      error by the defense
#'  \item X2b, hits on which the batter reached second base safely
#'  \item X3b, hits on which the batter reached third base safely
#'  \item hr, number of home runs
#'  \item rbi, runs batted in
#'  \item sb, stolen bases
#'  \item cs, caught stealing
#'  \item bb, base on balls (walk)
#'  \item so, strike outs
#'  \item ibb, intentional base on balls
#'  \item hbp, hits by pitch
#'  \item sh, sacrifice hits
#'  \item sf, sacrifice flies
#'  \item gidp, ground into double play
#' }
#' @docType data
#' @name baseball
#' @usage baseball
#' @format A 21699 x 22 data frame
#' @references \url{http://www.baseball-databank.org/}
#' @keywords datasets
"baseball"