specify: Specify an ARMA model
Description
Specify an ARMA model
Usage
specify(ar = 0, ma = 0, sigma2 = 1)
Value
Returns an ARMA model consisting of a list with the following components.
- phi
Vector of AR coefficients (index number equals coefficient subscript)
- theta
Vector of MA coefficients (index number equals coefficient subscript)
- sigma2
White noise variance
Arguments
- ar
Vector of AR coefficients (index number equals coefficient subscript)
- ma
Vector of MA coefficients (index number equals coefficient subscript)
- sigma2
White noise variance