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From |
Stas Kolenikov <skolenik@gmail.com> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: How to code |x_i-x_j| in stata? |

Date |
Thu, 10 Oct 2013 08:39:02 -0500 |

This seems like a standard definition of the Gini index to me, and there's a huge number of different user-contributed modules to compute this (that may differ in some small sample details like n*(n-1) in place of your n^2). -findit inequality- to get the full list. I use -ineqdec0- by Stephen Jenkins. -- Stas Kolenikov, PhD, PStat (ASA, SSC) -- Senior Survey Statistician, Abt SRBI -- Opinions stated in this email are mine only, and do not reflect the position of my employer -- http://stas.kolenikov.name On Wed, Oct 9, 2013 at 10:09 PM, LI Mengjia <limengjia626@163.com> wrote: > Dear statalist, > > I'm trying to calculate a "locational Gini coefficient" (rg) by using the formula in a reference paper in the following: > > rg=(sum|x_i-x_j|)/(2*n^2*u) > > where n is the total number of industries in an area, i and j are just two industries in n industries, x is the market share of any industry, and u is the mean of x. > > I have not idea how to put x_i-x_j into stata. > > Thanks and best regards, > Amy > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: How to code |x_i-x_j| in stata?***From:*"LI Mengjia" <limengjia626@163.com>

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