st: Re: RE: RE: -forval- with -inequal7-

["Zurab Sajaia" <zsajaia@hotmail.com>]

Hi Lola,

I've just noticed this tread.  For similar problems (when you want to 
generate inequality measures for subgroups) I wrote -egen- extensions 
replication most (or all) indices produced by -inequal7-

try, findit egen_inequal

so once you download it you can simply code:

egen gini = inequal(income), by(date) weights(wei) index(gini)

or even simpler:

egen gini = gini(income), by(date) weights(wei)

Hope this helps,
Zurab





----- Original Message ----- 
From: "Andreas, Peichl" <a.peichl@wiso.uni-koeln.de>
To: <statalist@hsphsun2.harvard.edu>
Sent: Tuesday, July 15, 2008 7:49 AM
Subject: st: RE: RE: -forval- with -inequal7-



> Hey Lola,
>
> > These do work when limited to 'consecutive' dates (eg 19901/19904), the 
> > >problem arises when they span  'missing' dates as there is no 19905. The 
> > >programme runs and calculates the gini for the dates up until a 'missing' 
> > >date and then stops with an error. This is not a problem with other 
> > >commands using the same dataset, but has arisen with -inequal7-.
> The problem is that not all dates exist and inequal7 returns an error 
> message when you try to use it on a zero obs subsample.
>
> You could follow Nick Cox's advice and have a look at:
> http://www.stata.com/support/faqs/data/foreach.html
>
> or use capture to avoid Stata stopping with an error:
>
> g gini=.
> qui forval i = 19901/20071 {
> capture inequal7 income [fw=wei] if date==`i', returns
> replace gini=r(gini) if date==`i'
> }
>
>
> Cheers,
> Andreas
>
> -------------------------------------------------
> Dr. Andreas Peichl
> Cologne Center for Public Economics
> University of Cologne
> Chair Prof. Dr. C. Fuest
> Albertus-Magnus-Platz
> 50923 K�ln (Cologne), Germany
> -------------------------------------------------
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> -------------------------------------------------
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> -------------------------------------------------
>
>
>
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