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Re: st: RE: number generation


From   Tyler Frazier <tyfrazier@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: number generation
Date   Sun, 30 May 2010 22:31:50 +0200

I came up with this short code based on your recommendation -- the
bysort works fine, but I am having problems with the format option,
its syntax I believe.

*******
bysort plot: gen bldg=_n

tostring bldg, gen(bldg1) format(%3s)
*******


On Sun, May 30, 2010 at 7:14 PM, Martin Weiss <martin.weiss1@gmx.de> wrote:
>
> <>
>
> The solution could be as easy as
>
>
> ***********
> bysort block: gen bldg=_n
> ***********
>
> See NJC`s http://www.stata-journal.com/sjpdf.html?articlenum=pr0004
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Tyler Frazier
> Sent: Sonntag, 30. Mai 2010 19:02
> To: statalist@hsphsun2.harvard.edu
> Subject: st: number generation
>
> I would like to generate a method to number buildings in sequence, but
> restart the sequence in accordance with a group.  For example I have
> the following nomenclature
>
> (block)  (round)   (plot)     (bldg)
>  005       050       010       xxx
>  005       050       020       xxx
>  005       050       030       xxx
>  005       050       040       xxx  ...
>
>  005       050       150       xxx  ...
>
>  005       060       010       xxx  ...
>
>  010       010       010       xxx  ...
>
>
> where xxx represents a unique object identifier.  I'm thinking to use
> gen or egen with a cond() qualifier, but how to set the parameters for
> the unique object identifier such that it returns sets of the
> following structure
>
>  005      050       010         001
>  005      050       010         002
>  005      050       010         003  ...
>
>  005      050       010         999
>
> thank you,
> Ty
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