st: Univariate distribution graphs in a twoway environment?

[<Stefan.Gawrich@hlpug.hessen.de>]

Dear Statalisters,

I was asked to display the age distributions (e.g. kdensity, histogram ...) of several subgroups in one graph. 
Age is scaled on the x-axis, another numeric variable on the y-axis. 

The nearest example I found to explain this is -twoway rcap- :

      sysuse sp500, clear
      gen num = _n
	  keep if uniform() <.05	  
       twoway rcap high low num, hor ylabel(,angle(0)) || scatter  num close


In this case the y-var 'num' defines the vertical position of each rcap.

Now exchange each rcap with e.g. a kdensity curve (not available with the given data) and it would be what I'm looking for.
The y-var determines the vertical position of each curve but not it's scaling.
I didn't find any way to create a graph like this.
*** 

Another example would be to place diagrams inside a graph where x/y determines the position only.
Again I don't know how to make this, but I know that -spmap- draws basic diagrams on a map using centroid coordinates.


Best wishes

Stefan Gawrich
Dillenburg
Germany


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