Number of unit roots in a model

Gives the number of roots with modulus one in a model.

Usage

nUnitRoots(object)

Arguments

object

an object.

Details

nUnitRoots() gives the number of roots with modulus one in a model. This number is zero for stationary models, see also isStationaryModel().

Value

a non-negative integer number

Author

Georgi N. Boshnakov

Methods

signature(object = "SarimaSpec")

signature(object = "VirtualStationaryModel")