# forecast.HoltWinters

0th

Percentile

##### Forecasting using Holt-Winters objects

Returns forecasts and other information for univariate Holt-Winters time series models.

Keywords
ts
##### Usage
"forecast"(object, h=ifelse(frequency(object$x)>1,2*frequency(object$x),10), level=c(80,95),fan=FALSE,lambda=NULL, biasadj=FALSE,...)
##### Arguments
object
An object of class "HoltWinters". Usually the result of a call to HoltWinters.
h
Number of periods for forecasting
level
Confidence level for prediction intervals.
fan
If TRUE, level is set to seq(51,99,by=3). This is suitable for fan plots.
lambda
Box-Cox transformation parameter. Ignored if NULL. Otherwise, forecasts back-transformed via an inverse Box-Cox transformation.
Use adjusted back-transformed mean for Box-Cox transformations. If TRUE, point forecasts and fitted values are mean forecast. Otherwise, these points can be considered the median of the forecast densities.
...
Other arguments.
##### Details

This function calls predict.HoltWinters and constructs an object of class "forecast" from the results.

It is included for completeness, but the ets is recommended for use instead of HoltWinters.

##### Value

forecast".The function summary is used to obtain and print a summary of the results, while the function plot produces a plot of the forecasts and prediction intervals.The generic accessor functions fitted.values and residuals extract useful features of the value returned by forecast.HoltWinters.An object of class "forecast" is a list containing at least the following elements: is a list containing at least the following elements:

predict.HoltWinters, HoltWinters.
plot(forecast(fit))