R/shells.R

In rice: Radiocarbon Equations

#' shells Data
#'
#' A dataset containing the deltaR values and accompanying data from the marine database
#'
#' @docType data
#' @format A data frame with 1968 rows and 15 variables.
#' \describe{
#'   \item{lon}{Longitude of the datapoint}
#'   \item{lat}{Latitude of the datapoint}
#'   \item{no}{Map or ID number of the datapoint}
#'   \item{taxonN}{Taxon number of the datapoint}
#'   \item{dR}{calculated deltaR of the datapoint}
#'   \item{dSTD}{uncertainty of the deltaR of the datapoint}
#'   \item{collected}{Collection year for the datapoint}
#'   \item{res}{Reservoir effect of the datapoint}
#'   \item{res.error}{Uncertainty of the reservoir effect of the datapoint}
#'   \item{C14}{Radiocarbon age of the datapoint}
#'   \item{er}{Error of the radiocarbon age of the datapoint}
#'   \item{lab}{Lab code of the datapoint}
#'   \item{ref}{Reference for the datapoint}
#'   \item{taxon}{Taxon of the datapoint}
#'   \item{feeding}{Feeding ecology of the datapoint (if known)}
#' }
#' @source Data downloaded from calib.org/marine
#' @examples
#' data(shells)
#' head(shells)
"shells"