Produces a confidence ellipse that is an iso-contour of the Gaussian distribution, allowing to visualize a 2D confidence interval.

## Usage

```
ellipse(
x,
conf = 0.95,
np = 100,
plot = TRUE,
fill = "green",
alpha = 0.3,
random_fill = TRUE
)
```

## Arguments

- x
A

`matrix`

, a`data.frame`

or a`list`

of perimeter coordinates, often produced with`object_contour()`

.- conf
The confidence level. Defaults to

`0.95`

- np
Number of sampled points on the ellipse.

- plot
Create a plot? Defaults to

`TRUE`

.- fill
The color to fill the ellipse. Defaults to

`"green"`

.- alpha
The alpha value to define the opacity of ellipse. Defaults to

`0.3`

- random_fill
Fill multiple ellipses with random colors? Defaults to

`TRUE`

.