I want to standardize a set of outcomes and plot differences based on a category variable. I was using the stddiff package and getting exactly what I want in the stored results as r class. But how do I plot the standardized differences? I have something like this:

HTML Code:
sysuse auto
stddiff price mpg trunk, by( foreign )
return list
How do I plot r(stddiff)? I want to make it look something like a marginplot.