Produces a plot of the inverse AR and MA roots of an ARIMA model. Inverse roots outside the unit circle are shown in red.

## Arguments

- x
Object of class “Arima” or “ar”.

- type
Determines if both AR and MA roots are plotted, of if just one set is plotted.

- main
Main title. Default is "Inverse AR roots" or "Inverse MA roots".

- xlab
X-axis label.

- ylab
Y-axis label.

- ...
Other plotting parameters passed to

`par`

.- object
Object of class “Arima” or “ar”. Used for ggplot graphics (S3 method consistency).