zplane function

zplane

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

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

Examples

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

See Also

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

Author(s)

Diego J. Pedregal