Logical flag indicating whether rug is to be drawn on the usual side (bottom/left) as opposed to the other side (top/right).
start, end
Start and end points for the rug ticks on the y-axis.
x.units
Character vectors, replicated to be of length two. Specifies the (grid) units associated with start and end above. x.units are for the rug on the x-axis and y-axis respectively (and thus are associated with start and end values on the y and x scales respectively). See panel.rug for more details.
lty, lwd
Line type and width arguments (see par for more details).
Author(s)
Dave Armstrong (UW-Milwaukee, Department of Political Science)