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RE: st: RE: number generation


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: number generation
Date   Sun, 30 May 2010 23:33:15 +0200

<>

Not sure what you are trying to do. If you want the counter as strings (why
would you want that?), you can just say

***********
bysort plot: gen bldg=string(_n)
***********

-string()- happily accepts -format- as well.


-tostring-`s -format()- option accepts _numeric_ formats, as you are moving
from numeric to string. If you want to -format- the finished results, do it
in a separate line, just as you seem to be implying.


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 22:45
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: RE: number generation

I found this works, but it seems the format option should be in the
same line with -tostring-

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

tostring bldg, gen(bldg1)

format %003s bldg1
*******


On Sun, May 30, 2010 at 10:31 PM, Tyler Frazier <tyfrazier@gmail.com> wrote:
> 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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>

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