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st: RE: Modified Lorenz Curve


From   philippe van kerm <philippe.vankerm@ceps.lu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Modified Lorenz Curve
Date   Tue, 27 May 2008 15:02:44 +0200

If I understand the paper correctly, the "modified Lorenz curves" are what is elsewhere referred to as the Concentration curve. You can use -glcurve- for that, e.g.

ssc describe glcurve
sysuse auto
glcurve weight, sortvar(price) lorenz


If you want to plot several curves for several income sources, do stg like:
  glcurve incomesource1, sortvar(totalincome) lorenz glvar(mlc1) pvar(p) nograph
  glcurve incomesource2, sortvar(totalincome) lorenz glvar(mlc2) nograph
  ...
  tw line mlc1 mlc2 ... p
or
  tw line mlc1 mlc2 ... p p  // to add a 45 degree ref line

Good luck
Philippe



-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of fleur wouterse
Sent: Tuesday, May 27, 2008 1:04 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: Modified Lorenz Curve

Dear all,

I have been trying to plot Modified Lorenz curves to
illustrate income distribution by source as in the
paper by Leones & Feldman (1998) in Economic
Development and Cultural Change but I do not see an
option in Stata to do anything like this.

Your help is appreciated,

Fleur Wouterse




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