\HeaderA{melanoma}{Melanoma skin cancer incidence}{melanoma}
\keyword{datasets}{melanoma}
\begin{Description}\relax
These data from the Connecticut Tumor Registry present
age-adjusted numbers of melanoma skin-cancer incidences per
100,000 people in Connectict for the years from 1936 to 1972.
\end{Description}
\begin{Usage}
\begin{verbatim}melanoma\end{verbatim}
\end{Usage}
\begin{Format}\relax
A data frame with 37 observations on the following 2 variables.
\describe{
\item[year] Years 1936 to 1972.
\item[incidence] Rate of melanoma cancer per 100,000 population.
}
\end{Format}
\begin{Note}\relax
This dataset is not related to the \code{\LinkA{melanoma}{melanoma}}
dataset in the \bold{boot} package with the same name.

The S-PLUS 6.2 help for the melanoma data says that the incidence rate is
per \emph{million}, but this is not consistent with data found at the
National Cancer Institute (\url{http://www.nci.nih.gov}).
\end{Note}
\begin{Author}\relax
Documentation contributed by Kevin Wright.
\end{Author}
\begin{Source}\relax
Houghton, A., E. W. Munster, and M. V. Viola.  (1978).  Increased
Incidence of Malignant Melanoma After Peaks of Sunspot Activity.
\emph{The Lancet}, \bold{8}, 759--760.
\end{Source}
\begin{References}\relax
Cleveland, William S. (1993). \emph{Visualizing Data}.  Hobart Press,
Summit, New Jersey.
\end{References}
\begin{Examples}
\begin{ExampleCode}
# Time-series plot.  Figure 3.64 from Cleveland.
xyplot(incidence ~ year,
  data = melanoma,
        aspect = "xy",
        panel = function(x, y)
                panel.xyplot(x, y, type="o", pch = 16),
        ylim = c(0, 6),
        xlab = "Year",
        ylab = "Incidence")
\end{ExampleCode}
\end{Examples}

