forecast
is a generic function for forecasting from time series or time series models.
The function invokes particular methods which depend on the class of the first argument.
For example, the function forecast.Arima
makes forecasts based on the results produced by arima
.
The function forecast.ts
makes forecasts using exponential smoothing state space models.forecast(object,...)
## S3 method for class 'ts':
forecast(object, h, level=c(80,95), fan=FALSE, ...)
forecast.ts
passes these to forecast.ets
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 various useful features of
the value returned by forecast$model
.
An object of class "forecast"
is a list containing at least the following elements:object
itself or the time series used to create the model stored as object
).ets
."forecast"
are
forecast.ets
, forecast.Arima
, forecast.HoltWinters
, forecast.StructTS
,
meanf
, rwf
, splinef
, thetaf
, croston
, ses
, holt
,
hw
.