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Re: st: Is -collapse- the Stata's fastest routine to summarize data sets?


From   Eric Booth <ebooth@ppri.tamu.edu>
To   "<statalist@hsphsun2.harvard.edu>" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Is -collapse- the Stata's fastest routine to summarize data sets?
Date   Thu, 8 Jul 2010 20:22:47 +0000

<>

See this thread:

http://www.stata.com/statalist/archive/2010-07/msg00098.html
 
asking about -ftabstat- described here:

http://www.stata.com/statalist/archive/2008-04/msg01120.html

The posting form 2008 describes some of the speed differences among using -egen-, -collapse-, -gen-, and -ftabstat-.


~ Eric
__
Eric A. Booth
Public Policy Research Institute
Texas A&M University
ebooth@ppri.tamu.edu
Office: +979.845.6754


On Jul 8, 2010, at 9:02 AM, Tiago V. Pereira wrote:

> Dear Statalister,
> 
> I am eager to know any faster alternatives to -collapse-, because I have
> to summarize relatively large data sets for a simulation study. -profiler-
> is telling me that most of the computation burden comes from -collapse-.
> Do you know (have) any faster alternative? Perhaps a plug-in?
> 
> Thanks!
> 
> Tiago


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