R: Plot function for HoltWinters objects

plot.HoltWinters {stats}

R Documentation

Plot function for HoltWinters objects

Description

Produces a chart of the original time series along with the fitted values. Optionally, predicted values (and their confidence bounds) can also be plotted.

Usage

## 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, ...)

Arguments

`x`	Object of class `"HoltWinters"`
`predicted.values`	Predicted values as returned by `predict.HoltWinters`
`intervals`	If `TRUE`, the prediction intervals are plotted (default).
`separator`	If `TRUE`, a separating line between fitted and predicted values is plotted (default).
`col, lty`	Color/line type of original data (default: black solid).
`col.predicted, lty.predicted`	Color/line type of fitted and predicted values (default: red solid).
`col.intervals, lty.intervals`	Color/line type of prediction intervals (default: blue solid).
`col.separator, lty.separator`	Color/line type of observed/predicted values separator (default: black dashed).
`ylab`	Label of the y-axis.
`main`	Main title.
`ylim`	Limits of the y-axis. If `NULL`, the range is chosen such that the plot contains the original series, the fitted values, and the predicted values if any.
`...`	Other graphics parameters.

Author(s)

David Meyer David.Meyer@wu.ac.at

References

C. C. Holt (1957) Forecasting trends and seasonals by exponentially weighted moving averages, ONR Research Memorandum, Carnegie Institute of Technology 52.