I posted my problem last night and went off to bed, and this morning I have three responses. Being down under has its advantages!
Many thanks to Sam, Nick and Philippe for their suggestions. I will work on them now.
Thanks once again,
Ramani
[email protected] wrote:
> An alternative to working in log and back-transform the density might
> here
> be to use an adaptive kernel density estimate (-findit akdensity- for
> files and material).
>
> The following lines should get you near what you want:
>
> * 1/ get -akdensity-
> net from http://www.stata-journal.com/software/sj3-2/
> net install st0037
> * 2/ estimate the density and save the coordinates
> akdensity XXX , nograph gen(x fx)
> * plot in the range you want
> tw line fx x if x<ZZZ
>
> Hope this helps,
>
> Philippe
>
>
> <<<<<<<<<<<>>>>>>>>>><<<<<<<<<>>>>>>>>>>
> Philippe Van Kerm
> CEPS/INSTEAD
> BP48, L-4501 Differdange
> G.-D. Luxembourg
> [email protected]
> <<<<<<<<<<<>>>>>>>>>><<<<<<<<<>>>>>>>>>>
>
> >>>>>>>>
>
> st: RE: Truncating x-axis in kernel density graphs
>
>
> Ramani Gunatilaka
>
> > I am plotting kernel density functions of per capita
> > household consumption for three years on the same graph.
> > All three distributions are skewed to the left and have
> > very long tails extending to the right.
> > I would like to truncate the x axis at a certain
> > consumption value so that the long tail is dropped and the
> > area where all the action is, stretched across so that the
> > changes are more visible.
> > I have explored the graph scale options and Stata list
> > archives but couldn't find anything that related to my
> > particular problem.
> > If I were to specify a shorter range of consumption values
> > than the entire data set, wouldn't it distort results?
> > Would anyone be able to advise of any alternative?
>
>
>
>
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