# plot.Arima

From forecast v8.13
by Rob Hyndman

##### Plot characteristic roots from ARIMA model

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

- Keywords
- hplot

##### Usage

```
# S3 method for Arima
plot(
x,
type = c("both", "ar", "ma"),
main,
xlab = "Real",
ylab = "Imaginary",
...
)
```# S3 method for ar
plot(x, main, xlab = "Real", ylab = "Imaginary", ...)

# S3 method for Arima
autoplot(object, type = c("both", "ar", "ma"), ...)

# S3 method for ar
autoplot(object, ...)

##### 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).

##### Details

`autoplot`

will produce an equivalent plot as a ggplot object.

##### Value

None. Function produces a plot

##### See Also

##### Examples

```
# NOT RUN {
library(ggplot2)
fit <- Arima(WWWusage, order = c(3, 1, 0))
plot(fit)
autoplot(fit)
fit <- Arima(woolyrnq, order = c(2, 0, 0), seasonal = c(2, 1, 1))
plot(fit)
autoplot(fit)
plot(ar.ols(gold[1:61]))
autoplot(ar.ols(gold[1:61]))
# }
```

*Documentation reproduced from package forecast, version 8.13, License: GPL-3*

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