## S3 method for class 'default':
zplane(filt, a, \ldots)
## S3 method for class 'Arma':
zplane(filt, \ldots)
## S3 method for class 'Ma':
zplane(filt, \ldots)
## S3 method for class 'Zpg':
zplane(filt, \ldots)
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.
Value
No value is returned.
Details
Poles are marked with an x, and zeros are marked with an o.