unitcircle

unitcircle.default

unitcircle.lagpol

<code>unitcircle</code> plots the inverse roots of a lag polynomial together the
unit circle.

Build customized transfer function and ARIMA models with multiple operators
and parameter restrictions. Provides tools for model identification, estimation
using exact or conditional maximum likelihood, diagnostic checking, automatic outlier
detection, calendar effects, forecasting, and seasonal adjustment. The new version
also supports unobserved component ARIMA model specification and estimation
for structural time series analysis.

Jose L. Gallego

tfarima

Transfer Function and ARIMA Models

unitcircle function

<dl><dt>lp</dt>
<dd>an object of class <code>lagpol</code>.</dd>
<dt>...</dt>
<dd>additional arguments.</dd>
<dt>s</dt>
<dd>integer, seasonal period.</dd></dl>

Arguments

Unit circle — unitcircle

<dl>

<dt>lp</dt>
<dd>an object of class <code>lagpol</code>.</dd>


<dt>...</dt>
<dd>additional arguments.</dd>


<dt>s</dt>
<dd>integer, seasonal period.</dd>

</dl>

unitcircle: Unit circle

Description

Usage

Value

Arguments

Examples