zplane {signal}R Documentation

Pole-zero plot

Description

Plot the poles and zeros of a model or filter.

Usage

## Default S3 method:
zplane(filt, a, ...)

## S3 method for class 'Arma':
zplane(filt, ...)

## S3 method for class 'Ma':
zplane(filt, ...)

## S3 method for class 'Zpg':
zplane(filt, ...)

Arguments

filt for the default case, the moving-average coefficients of an ARMA model or filter. Generically, filt specifies an arbitrary model or filter operation.
a the autoregressive (recursive) coefficients of an ARMA filter.
... Additional arguments passed to plot.

Details

Poles are marked with an `x', and zeros are marked with an `o'.

Value

No value is returned.

Author(s)

Tom Short

References

Octave Forge http://octave.sf.net

http://en.wikipedia.org/wiki/Pole-zero_plot

See Also

Arma, freqz

Examples

filt <- ellip(5, 0.5, 20, .2)
zplane(filt)

[Package signal version 0.5 Index]