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RE: st: AW: Merging database


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: AW: Merging database
Date   Wed, 29 Apr 2009 19:35:13 +0100

Correct about my typo. The example is also irrelevant, because of the
main issue, now clarified in my previous post. 

Nick 
n.j.cox@durham.ac.uk 

Eric A. Booth

You need to make your "V*" lowercase "v*" in your example because v1,  
v2, v3 are lowercase (in original do-file, my V's were uppercase)

  clear

  set obs 1
*obs was 0, now 1

  gen v1 = 1

  gen v2 = 2

  gen v3 = 3

foreach x in v* {
  d `x'
}


On Apr 29, 2009, at 1:20 PM, Nick Cox wrote:

> Well, it does not work for me. (I do know what a wildcard like V*  
> means
> in Stata. The point is that you need -of var- to make explicit that  
> you
> have one.)
>
> . clear
>
> . set obs 1
> obs was 0, now 1
>
> . gen v1 = 1
>
> . gen v2 = 2
>
> . gen v3 = 3
>
> . foreach v in V* {
>  2. d `v'
>  3. }
> variable V* not found
> r(111);
>
> Nick
> n.j.cox@durham.ac.uk
>
> Eric A. Booth
>
> On Apr 29, 2009, at 12:03 PM, Nick Cox wrote:
>
>> I have various comments on this code.
>>
>> 1. -foreach x in V*- won't work. Eric is probably thinking of
>> -foreach x of var V*- but in this case -foreach v in V1 V2 V3- takes
>> no more thought.
>>
>
> -foreach x in V*- works for fine for me.  It loops over all the
> variables V1-V3.
>
>
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