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st: AW: compare files, vars only


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: compare files, vars only
Date   Thu, 19 Feb 2009 16:53:44 +0100

<> 



*************
clear*
sysuse auto, clear
drop  gear_ratio displacement
save newauto, replace
sysuse auto, clear
qui ds
loc first `r(varlist)'
u newauto, clear
qui ds
loc second `r(varlist)'
loc diff: list first - second
di in red "Differences: `diff'"
*************

I am sure I have violated several rules on the possible lengths of
components in here (think 244...)


HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von David Kantor
Gesendet: Donnerstag, 19. Februar 2009 16:41
An: Statalist
Betreff: st: compare files, vars only

Hi.
Does anyone know of a program to compare the sets of variables in two 
data files? What I have in mind is something akin to -cf-, but...
  it would not compare values -- only the names of variables;
  it would not care whether the two data files had the same number of 
observations.

I was planning to write such a program, but I wanted to be sure that 
it hadn't already been done.
Thanks
--David

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