Re: st: Ranking observations of a variable across a set of variables

["Jennifer L. Milosch" <milosch@umail.ucsb.edu>]

Thank you, this is exactly what I was looking for.

--
Jennifer L. Milosch
Ph.D. Candidate
Dept of Economics
UC Santa Barbara


Quoting Nick Cox <njcoxstata@gmail.com>:

> For a detailed review of this and similar problems, see
>
> SJ-9-1  pr0046  . . . . . . . . . . . . . . . . . . .  Speaking  
> Stata: Rowwise
>         (help rowsort, rowranks if installed) . . . . . . . . . . .   
> N. J. Cox
>         Q1/09   SJ 9(1):137--157
>         shows how to exploit functions, egen functions, and Mata
>         for working rowwise; rowsort and rowranks are introduced
>
> Note that -egen-'s -rank()- function is not producing incorrect
> results; it just does not produce what Jennifer wants and does not
> claim to. It ranks observations on the values of a variable, not
> variables on the values of a set of variables in each observation.
>
> Nick
>
> On Wed, Nov 2, 2011 at 5:02 AM, Tirthankar Chakravarty
> <tirthankar.chakravarty@gmail.com> wrote:
>
> > You probably want Nick Cox's -rowranks- package, available from SSC:
> >
> > *****************************************
> > clear*
> > input x1 x2 x3 x4
> > 50 10 30 60
> > 20 60 10 40
> > end
> > ssc install rowranks
> > rowranks x1-x4, generate(rank1-rank4) field
> > li
> > *****************************************
> > On Tue, Nov 1, 2011 at 8:24 PM, Jennifer L. Milosch
> > <milosch@umail.ucsb.edu> wrote:
> > > I am trying to find the rank of an observation of a variable  
> > > across a set of
> > > variables. My data looks something like this:
> > >
> > > x1|x2|x3|x4
> > > 50|10|30|60
> > > 20|60|10|40
> > >
> > > I want to generate a variable for the rank of x1 compared to the values of
> > > x1, x2, x3, and x4 for each observation in the data.  I have tried using
> > >
> > > -bysort x1 x2 x3 x4: egen rank1=rank(x1)-
> > >
> > > but it is returning a variable of all ones, which is not correct.  
> > >  Using the
> > > data above, I'm look for variables that are:
> > >
> > > rank1|rank2|rank3|rank4
> > > 2 |4 |3 |1
> > > 3 |1 |4 |2
> *
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