Creates an AutoRegressive Moving Average model.
ARMAModel(p = 0L, q = 0L, s = 0L, include_mean = TRUE, include_drift = FALSE)An ARMAModel object
if (FALSE) { # \dontrun{
# AR(1)
model <- ARMAModel(p = 1)
# MA(1)
model <- ARMAModel(q = 1)
# ARMA(2,1) with seasonality
model <- ARMAModel(p = 2, q = 1, s = 12)
} # }