zplane: zplane

In UComp: Automatic Unobserved Components and Other Time Series Models

zplane

Description

Real-imaginary plane to show roots of digital filters (ARMA)

Usage

zplane(MApoly = 1, ARpoly = 1)

Arguments

MApoly	coefficients of numerator polynomial in descending order
ARpoly	coefficients of denominator polynomial in descending order

Details

Shows the real-imaginary plane to show zeros (roots of numerator or MA polynomial) and poles (roots of denominator of AR polynomial). Unit roots and real vs imaginary roots can be seen by eye

Author(s)

Diego J. Pedregal

See Also

colMedians, rowMedians, tests, sumStats, gaussTest, ident, cusum, varTest, conv, armaFilter, dif, roots, acft, slide, plotSlide, Accuracy, tsDisplay, size

Examples

zplane(c(1, -2, 1), c(1, -0.8))

UComp documentation built on May 31, 2023, 7:41 p.m.