forecast (version 2.09)

forecast.StructTS: Forecasting using Structural Time Series models

Description

Returns forecasts and other information for univariate structural time series models.

Usage

## S3 method for class 'StructTS':
forecast(object, h=ifelse(object$call$type=="BSM",2*object$xtsp[3],10),
    level=c(80,95), fan=FALSE, ...)

Arguments

object
An object of class "StructTS". Usually the result of a call to StructTS.
h
Number of periods for forecasting
level
Confidence level for prediction intervals.
fan
If TRUE, level is set to seq(50,99,by=1). This is suitable for fan plots.
...
Other arguments.

Value

  • An object of class "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.StructTS. An object of class "forecast" is a list containing at least the following elements:
  • modelA list containing information about the fitted model
  • methodThe name of the forecasting method as a character string
  • meanPoint forecasts as a time series
  • lowerLower limits for prediction intervals
  • upperUpper limits for prediction intervals
  • levelThe confidence values associated with the prediction intervals
  • xThe original time series (either object itself or the time series used to create the model stored as object).
  • residualsResiduals from the fitted model. That is x minus fitted values.
  • fittedFitted values (one-step forecasts)

Details

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

See Also

StructTS.

Examples

Run this code
fit <- StructTS(WWWusage,"level")
plot(forecast(fit))

Run the code above in your browser using DataCamp Workspace