R: ggnostic - leave one out model sigma

ggally_nostic_sigma {GGally} | R Documentation

## ggnostic - leave one out model sigma

### Description

A function to display `stats::influence`'s sigma value.

### Usage

    ggally_nostic_sigma(data, mapping, ..., lineColor = brew_colors("grey"),
      linePosition = attr(data, "broom_glance")$sigma)

### Arguments

`data, mapping, ..., lineColor` | parameters supplied to `ggally_nostic_line`
`linePosition` | line that is drawn in the background of the plot. Defaults to the overall model's sigma value.

### Details

As stated in `stats::influence` documentation:

sigma: a vector whose i-th element contains the estimate of the residual standard deviation obtained when the i-th case is dropped from the regression. (The approximations needed for GLMs can result in this being 'NaN'.)

A line is added to display the overall model's sigma value. This gives a baseline for comparison

### Value

ggplot2 plot object

### See Also

`stats::influence`

### Examples

    dt <- broomify(stats::lm(mpg ~ wt + qsec + am, data = mtcars))
    ggally_nostic_sigma(dt, ggplot2::aes(wt, .sigma))

[Package GGally version 1.3.2 Index]