forecast.bats

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Forecasting using BATS and TBATS models

Forecasts h steps ahead with a BATS model. Prediction intervals are also produced.

Keywords
ts
Usage
## S3 method for class 'bats':
forecast(object, h, level=c(80,95), fan=FALSE, ...)
## S3 method for class 'tbats':
forecast(object, h, level=c(80,95), fan=FALSE, ...)
Arguments
object
An object of class "bats". Usually the result of a call to bats.
h
Number of periods for forecasting. Default value is twice the largest seasonal period (for seasonal data) or ten (for non-seasonal data).
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, currently ignored.
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.bats.

    An object of class "forecast" is a list containing at least the following elements:

  • modelA copy of the bats object
  • 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)

References

De Livera, A.M., Hyndman, R.J., & Snyder, R. D. (2011), Forecasting time series with complex seasonal patterns using exponential smoothing, Journal of the American Statistical Association, 106(496), 1513-1527.

See Also

bats, tbats,forecast.ets.

Aliases
  • forecast.bats
  • forecast.tbats
Examples
fit <- bats(USAccDeaths)
plot(forecast(fit))
taylor.fit <- bats(taylor)
plot(forecast(taylor.fit))
Documentation reproduced from package forecast, version 4.04, License: GPL (>= 2)

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