| ggally_nostic_sigma {GGally} | R Documentation |
A function to display stats::influence's sigma value.
ggally_nostic_sigma(data, mapping, ..., lineColor = brew_colors("grey"),
linePosition = attr(data, "broom_glance")$sigma)
data, mapping, ..., lineColor |
parameters supplied to |
linePosition |
line that is drawn in the background of the plot. Defaults to the overall model's sigma value. |
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
ggplot2 plot object
stats::influence
dt <- broomify(stats::lm(mpg ~ wt + qsec + am, data = mtcars)) ggally_nostic_sigma(dt, ggplot2::aes(wt, .sigma))