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help for ^gby^                           
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subset graphs and calculates in the same output
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  ^gby^ varname^:^ command [, ^hi^lo ^gn^ame(newname) ^nol^ab 
   original-options]

Description
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^gby^ makes subgroup graphs including -kdensity- in the same plot. 
It also works with -means-, -centile- and -summarize- for subgroup 
calculations. 

options 
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^hi^lo: for high-low bar
^gn^ame: specify label names    
^nol^ab: suppress automatic label

Examples
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    ^gby sex: graph height age, ylab  xlab by(race) s(po)^
    Scatter plots: both sex in the same plot separately for race

    ^gby sex: graph height, bar mean ylab by(race)^
    One bar plot height (mean) vs. race clustered by sex

    ^gby sex: graph height, box mean ylab by(race)^
    One box plot height vs. race clustered by sex

    ^gby sex: graph y hi lo x,  hilo  xlab(1(1)4) ylab^ 
    One high-low charts: both sex in the save plot.
    
    ^gby sex: kdensity height, n(80)^

    ^gby agegr: means height weight sbp^

Author
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    Zhiqiang Wang
    Menzies School of Health Research
    Darwin Australia
    wang@@menzies.su.edu.au

also see
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On-line:  help for ^by^, ^for^