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
[email protected]
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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