figStripChart: Create strip chart on plot
In lmSupport: Support for Linear Models

Adds a strip chart (variant of a rug plot that includes density info) to X (or other) axis on a plot

1 2	figStripChart(x, side=1, sshift=0.3, adjoffset=1, strip.col='gray', strip.pch=15, strip.cex= 0.2)

`x`	vector of data to plot
`side`	axis for plot, 1=bottom (default), 2=left, 3= top, 4= right
`sshift`	scaling parameter for location of plot. Use default
`adjoffset`	scaling parameter for dot spacing
`strip.col`	color of dots. Default is gray
`strip.pch`	point type for dots. Default is 15 (small dot)
`strip.cex`	scaling parameter for size of dots