Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Re: st: .dta storage, why is too big?


From   "Clyde Schechter" <clyde.schechter@einstein.yu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: Re: st: .dta storage, why is too big?
Date   Wed, 8 Jun 2011 12:05:33 -0700

On Tue, 7 Jun 2011, Daniel Marcelino wrote:

> Hello for all,
>
> today I came across my old and new files size, R and Stata storage
> respectively. This got me thinking about why Stata compression is too
> inefficient compared to R? Even thought I use variable attributes like
> labels R compression is incredible. For example, 530 mb of Stata file
> turns into 9 mb R file and about 330 mb as txt file.  So, my point is:
> do you know any trick to compress Stata files addition to command line
> "compress".

and Daniel Feenberg replied that Stata doesn't do any "Shannonesque
compression."

That is true, but I really wonder if there isn't something wrong with
Daniel Marcelino's Stata installation, or something very odd about the
file that provoked his post.  I have been using Stata since version 4 and
I have _never_ in all those years encountered a data set that was larger
as .dta than as a text file.  The .dta version may not be much smaller
than the text version, but, I have never seen it be larger.


Clyde Schechter
Associate Professor of Family & Social Medicine
Albert Einstein College of Medicine, Bronx, NY, USA

Please note new e-mail address: clyde.schechter@einstein.yu.edu

*
*   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/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index