how about using the set memory to increase Stata memory allocation? have you tried this?
bw
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> Date: Sat, 19 Aug 2006 19:36:48 -0400
> From: [email protected]
> To: [email protected]
> Subject: st: file size problems
>
> I'm using Stata 9.2 on WinXP (SP2), updated.
>
> I have a file which is 500mb, but when I load it into
> Stata, it requires 825mb. That doesn't seem right:
>
> . dir first.dta
> 500.7M 8/19/06 18:33 first.dta
>
> . u first.dta, clear
>
> . d
>
> Contains data from first.dta
> obs: 75,006,197
> vars: 3 19 Aug 2006 18:33
> size: 825,068,167 (12.6% of memory free)
> ---------------------------------------------------
>
>
> This is a problem, because WinXp will only allocate 900mb to Stata (anyone
> know how to change this? the machine has 4gb). The first thing I want to do
> when I load this file is:
>
> . keep if month<mdy(1,1,2000)
>
> however:
>
> no room to add more variables due to width
> An attempt was made to add a variable that would have increased the memory
> required to store an observation beyond
> what is currently possible. You have the following alternatives:
>
> 1. Store existing variables more efficiently; see help compress.
>
> 2. Drop some variables or observations; see help drop. (Think of Stata's
> data area as the area of a rectangle;
> Stata can trade off width and length.)
>
> 3. Increase the amount of memory allocated to the data area using the set
> memory command; see help memory.
> r(902);
>
>
>
> I can't drop any other variables (note that there are only 3). Any ideas? In
> particular, is there an alternative to "keep" that doesn't add a variable?
>
> thanks,
> Jeph
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
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