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RE: st: RE: Using results from correlation matrices to pinpoint variables


From   Alejandro Delafuente <alejandro.delafuente@st-antonys.oxford.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: RE: Using results from correlation matrices to pinpoint variables
Date   Sun, 19 Jun 2005 16:09:53 +0100 (BST)

many thanks Nick. I sorted out the problem.

In message <031173627889364697C50B3B266CBB8A101BAF@GEOGMAIL.geog.ad.dur.ac.uk> 
statalist@hsphsun2.harvard.edu writes:
> My guess is that what you are getting what you 
> ask for, but that it is not what you want. 
> 
> The difference between 
> 
> 	if <condition> <command> 
> 
> and 
> 
> 	<command> if <condition> 
> 
> is profound. For one documentation, see
> http://www.stata.com/support/faqs/lang/ifqualifier.html
> 
> I am not clear what you want precisely. If you 
> want to drop a variable if and only if all observations
> are missing, then 
> 
> . search dropmiss 
> 
> for a convenience command. 
> 
> Nick 
> n.j.cox@durham.ac.uk 
> 
> Alejandro Delafuente
> > 
> > Dear Nick, thanks for your advice. With some little 
> > adjustments it worked out! 
> > Also, taking advantage of your generosity let me ask you a 
> > quick question: am 
> > trying to drop some monthly variables in a time sequence 
> > (from january 1961 to 
> > dec 2001) with missings in them. My code looks as follows:
> > foreach var of varlist jan* feb* ... dec* {
> > 	if `var' ==. {
> > 	drop `var' 
> > 	}
> > }
> > But for some reason it is not working. Can you tell why?
> > As always, many thanks.
> > 
> 
> *
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> 

-- 
Alejandro de la Fuente
QEH/Department of International Development
Oxford University
*
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