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Re: Rephrase of earlier post: how might one calculate such things as cross-product matrices without storing Xs as matrices?


From   Maarten buis <[email protected]>
To   [email protected]
Subject   Re: Rephrase of earlier post: how might one calculate such things as cross-product matrices without storing Xs as matrices?
Date   Mon, 12 Jan 2009 07:03:54 +0000 (GMT)

--- Jake <[email protected]> wrote:
> How might one go about calculating such things as cross-product
> matrices without swamping memory by storing entire lists of
> independent variables as matrices? 

Within Mata you can use -st_view-, See William Gould (2005) Mata
Matters: Using views onto the data. The Stata Journal, 5(4): 567-573.
http://www.stata-journal.com/article.html?article=pr0019

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      
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