st: Re: ifcmd question

["Michael Blasnik" <michael.blasnik@verizon.net>]

..Not completely clear what you want, but if x>1 evaluates the first 
observation of x and compares that to 1, it doesn't look for any x > 1. 
Here's something that might do what you want:

sum x, meanonly
if r(max)>1 save hola.dat

Michael Blasnik


----- Original Message ----- 
From: "Robert Duval" <rduval@gmail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Sunday, November 12, 2006 5:01 PM
Subject: st: ifcmd question



> Dear all,
>
> I am trying to pass a command to a whole dataset if a variable takes
> certain values... For instance I would like Stata to save a file
> hola.dat if variable x takes values >1...
>
> I tried
>
> if x>1 {
> save hola.dat
> }
>
> but at execution Stata doesn't do anything.
>
> Please note I don't want to filter obs. I just want the program to
> save the current file under a given name if one of its variables takes
> certain values.
>
> The problem is that ifcmd evaluates an exp and the command save
> applies to the whole dataset and not to a subset of obs.
>
> Any suggestion how to get at my goal?
> Thanks again in advance,
> robert
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