This function is a constructor for the cor.arma class, allowing for autoregression terms only.
Usage
cor.ar(formula = ~1, p = 1)
Arguments
formula
A one sided formula of the form ~ t, or ~ t | g, specifying a time covariate t and, optionally, a grouping factor g.
A covariate for this correlation structure must be integer valued. When a grouping factor is present in formula, the correla
p
A non-negative integer specifying the autoregressive order of the ARMA structure. Default is 1.
Value
An object of class cor.arma containing solely autoregression terms.