A logical scalar that indicates whether the data points
should be plotted as circles on the fitted curves of each component.
...
Other arguments passed to plot.
Details
A plot is produced for each additive component in the fitted scar
object. Each function is plotted in the range of the observed covariates,
with the identifiability condition satisfied (see Details of scar).
It can be invoked by calling "plot(x)" for an object x of the
scar class, or directly by calling "plot.scar(x)" regardless
of the class of the object.