Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: How many observations can Stata 11 handle?
From
Stas Kolenikov <[email protected]>
To
[email protected]
Subject
Re: st: How many observations can Stata 11 handle?
Date
Wed, 15 Feb 2012 09:28:38 -0500
On Wed, Feb 15, 2012 at 8:42 AM, Tunga Kantarcı <[email protected]> wrote:
> Here is a short question. What is the maximum number of observations
> that Stata 11 can handle? I have an administrative data set which
> includes observations for about 3 million unique individuals, for 20
> variables. SPSS did open this data set but Stata 11 could not open it.
> I plan to draw a sample from the data set using SPSS and transfer the
> data to Stata 11 with the Stat-transfer data conversion program. So I
> would like to know the maximum number of observations that Stata 11
> can handle. Accordingly I will draw a sample using SPSS with the
> maximum number of observations that Stata can handle.
Check your memory settings first:
memory
set memory 640m
This should suffice for variables stored as doubles (8 bytes x 3M
observations x 20 variables = 480Mb, plus some 33% overhead). If you
indeed have "War and Peace" coded as string variables, with one
observation per paragraph, then things will certainly get more
complicated, as other people have indicated, but that's hardly a good
way to treat this masterpiece.
--
Stas Kolenikov, also found at http://stas.kolenikov.name
Small print: I use this email account for mailing lists only.
*
* 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/