st: Box Graph Question

[John Marvel <jdmarvel@gmail.com>]

My question refers to a statalist posting under the same subject line
as above ("Box Graph Question") from November 1, 2006.  I'm running
Stata 13 SE.

The code below (from Nick Cox) produces a very useful graph of
descriptive statistics.

My question is whether the elements of the graph (the bars) can be
ordered by mean.  In other words, if I wanted the bars that the code
produces to run from the lowest mean to the highest mean, how would I
do that (if possible?).

Thanks very much for any help,

John Marvel

****************************************************
sysuse auto, clear

statsby "su mpg" mean=r(mean) max=r(max) min=r(min) sd=r(sd), by(rep78)

gen meanpsd = mean + sd
gen meanmsd = mean - sd

twoway scatter mean rep78 || ///
rbar mean max rep78, bcolor(none) barw(0.2) || ///
rbar mean min rep78, bcolor(none) barw(0.2) || ///
rbar meanmsd meanpsd rep78 , barw(0.1) bcolor(red) ///
legend(off) ytitle(Miles per gallon) yla(, ang(h)) ///
note(red bars: mean +/- sd; empty bars show range)
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