\HeaderA{plot.HoltWinters}{Plot function for HoltWinters objects}{plot.HoltWinters}
\keyword{ts}{plot.HoltWinters}
\begin{Description}\relax
Produces a chart of the original time series along with the fitted
values. Optionally, predicted values (and their confidence bounds) can
also be plotted.
\end{Description}
\begin{Usage}
\begin{verbatim}
## S3 method for class 'HoltWinters':
plot(x, predicted.values = NA, intervals = TRUE,
        separator = TRUE, col = 1, col.predicted = 2,
        col.intervals = 4, col.separator = 1, lty = 1,
        lty.predicted = 1, lty.intervals = 1, lty.separator = 3,
        ylab = "Observed / Fitted",
        main = "Holt-Winters filtering",
        ylim = NULL, ...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] Object of class \code{"HoltWinters"}
\item[\code{predicted.values}] Predicted values as returned by \code{predict.HoltWinters}
\item[\code{intervals}] If \code{TRUE}, the prediction intervals are plotted (default).
\item[\code{separator}] If \code{TRUE}, a separating line between fitted and predicted values is plotted (default).
\item[\code{col, lty}] Color/line type of original data (default: black solid).
\item[\code{col.predicted, lty.predicted}] Color/line type of
fitted and predicted values (default: red solid).
\item[\code{col.intervals, lty.intervals}] Color/line type of prediction
intervals (default: blue solid).
\item[\code{col.separator, lty.separator}] Color/line type of
observed/predicted values separator (default: black dashed).
\item[\code{ylab}] Label of the y-axis.
\item[\code{main}] Main title.
\item[\code{ylim}] Limits of the y-axis. If \code{NULL}, the range is chosen
such that the plot contains the original series, the fitted values,
and the predicted values if any.
\item[\code{...}] Other graphics parameters.
\end{ldescription}
\end{Arguments}
\begin{Author}\relax
David Meyer \email{David.Meyer@wu-wien.ac.at}
\end{Author}
\begin{References}\relax
C. C. Holt (1957)
Forecasting trends and seasonals by exponentially weighted
moving averages,
\emph{ONR Research Memorandum, Carnegie Institute of Technology} \bold{52}.

P. R. Winters (1960)
Forecasting sales by exponentially weighted moving averages,
\emph{Management Science} \bold{6}, 324--342.
\end{References}
\begin{SeeAlso}\relax
\code{\LinkA{HoltWinters}{HoltWinters}}, \code{\LinkA{predict.HoltWinters}{predict.HoltWinters}}
\end{SeeAlso}

