Residual vs. leverage plot.
stat_resid_leverage( alpha = 0.5, method = "loess", se = FALSE, color = "steelblue", ... )
Adjust transparency of points.
Method for fitting the line to the points.
Keep standard error bands around line?
Color of the line.
Currently ignored. For extendability.
A `ggplot2` layer for plotting a fitted vs. residual scatter plot.