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RE: st: generate 3.000 dummies


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: generate 3.000 dummies
Date   Wed, 25 Oct 2006 06:32:10 +0100 (BST)

--- Joseph McDonnell <josephmcdonnellnl@hotmail.com> wrote:

From: "Cristian Mackenna" <chicomackenna@hotmail.com>
> >Is there any fast way to generate a dummy for every of the 3.000
> id_place
> >
> 
> forvalues j=1(1)3000 {
>       gen dummy`j'=(id_place==`j')
> }
> 
> but I doubt you really want to go down that path. That number of
> dummies is 
> excessive to say the least.
> 

I also doubt you need it, but if you do I'd do and want to do it with
this loop I'd replace the line -gen dummy`j'=(id_place==`j')- with 
-gen byte dummy`j'=(id_place==`j')-. See: -help generate- and -help
data types- This will keep the size of your data down. Richard
Williams' suggestion (use -tabulate- with the gen option) is ofcourse
even easier.
HTH,
Maarten

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

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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


		
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