RE: st: display identifiers accounting for duplicate obs

[tashi lama <ltashi32@hotmail.com>]

This actually works if you want to rank lowest to highest. Meaning, lowest one will get rank 1, second lowest will get rank 2 and highest will be ranked last. If you are doing the opposite i.e. giving highest obs rank1, second highest rank 2, then looks like you run out of option. 

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> Date: Fri, 4 May 2012 15:34:08 -0500
> Subject: Re: st: display identifiers accounting for duplicate obs
> From: skolenik@gmail.com
> To: statalist@hsphsun2.harvard.edu
>
> bysort hits : generate byte _first = (_n=1)
> generate long rank = sum( _first )
>
> On Fri, May 4, 2012 at 3:27 PM, tashi lama <ltashi32@hotmail.com> wrote:
> >
> > Hello all,
> >
> > I can't come up with this solution despite spending quite some thought and time. The problem in hand sounds fairly straigh forward
> >
> >
> >
> > I have a dataset like following
> >
> >
> >
> > hits
> >
> > 1
> >
> > 2
> >
> > 3
> >
> > 4
> >
> > 4
> >
> > 5
> >
> > 6
> >
> > 6
> >
> >
> >
> > and I want to generate variable rank. Notice, if there were no duplicate obs, i would have said
> >
> >
> >
> > gsort -hits
> >
> > gen rank=_n and rank column would have given the ranks of the obs. That is what i want.
> >
> >
> >
> > However, there are some duplicate obs and i tried doing
> >
> > gsort -hits
> >
> > gen rank=cond(hits[_n-1]==hits[_n], _n-1, _n) which would give me
> >
> >
> >
> > hits rank
> >
> > 6 1
> >
> > 6 1
> >
> > 5 3
> >
> > 4 4
> >
> > 4 4
> >
> > 3 6
> >
> > 2 7
> >
> > 1 8 and that is not what I want.
> >
> >
> >
> >
> >
> > I looked at commands like generate, duplicates and I didn't see much relevant to my problem.
> >
> >
> >
> >
> >
> > Could someone give me a lead where to look at or which command should I dig in ? Thanks a lot.
> >
> >
> >
> > Tashi
> >
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
>
>
>
> --
> ---- Stas Kolenikov
> -- http://stas.kolenikov.name
> ---- Senior Survey Statistician, Abt SRBI
> -- Opinions stated in this email are mine only, and do not reflect the
> position of my employer
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/ 		 	   		  
*
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