Adjust the smoothing bandwidth for the non-parametric
estimate. See density for details.
nplty
The line type of the non-parametric estimate.
Use zero to suppress.
jitter
Logical; if TRUE, the (transformed) data
are jittered to produce the rug plot. See jitter.
This need only be used if the data contains repeated
values.
main
Title of plot.
xlab,ylab
Labels for x and y axes.
...
Other plot parameters.
Details
For non-stationary models the data are transformed to stationarity.
The plot then corresponds to the distribution obtained when all
covariates are zero.