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Re: st: Creating a variable with gaps


From   "Johan Hellstrom" <johan.hellstrom@pol.umu.se>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Creating a variable with gaps
Date   Thu, 19 Mar 2009 09:54:12 +0100

Thanks Maarten. It worked fine.

Best,
Johan


--- On Thu, 19/3/09, Johan Hellstrom wrote:
> For graphing purposes I need to create a (filter-)variable
> that assign a value to every 1.000 observation (in total 
> there is about 80.000 observations). Although it could be
> done manually, can anyone tell me how to do this
> automatically?

gen byte filter = mod(_n, 1000) == 0

alternatively, if you want to make sure that all values 
are represented in your graph of variable x versus y
but that you don't plot the same point multiple times,
you could type:

bys x y: gen byte filter = _n == 1

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

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







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