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RE: st: a loop error of -foreach-


From   Grace Jessie <gracejessie@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: a loop error of -foreach-
Date   Fri, 17 Sep 2010 15:36:51 +0000

More exactly, I want to do -reg b x1 x2- if `j' gets the value of b,and do -logit a/c/d x1 x2- otherwise, where x1 and x2 are independent variables.
I just want to take the lists as elements and then do different things,i.e., do different things for different elements in the lists.
 
Grace


----------------------------------------
> From: gracejessie@hotmail.com
> To: statalist@hsphsun2.harvard.edu
> Subject: RE: st: a loop error of -foreach-
> Date: Fri, 17 Sep 2010 15:26:06 +0000
>
> Dear Uli and Maarten,
> Thank you for your replies.
> I know what is wrong after your explanations.
> However, what I want to do is letting stata interpret the elements of the lists just as elements, not variable names.
> In fact, I want to do -count- commmand or any other commands if the element is b and do others (such as -su-) otherwise.
> How to modify my loop for doing that?
> Thank you.
>
> Best regards,
> Grace
>
> ----------------------------------------
> > Date: Fri, 17 Sep 2010 09:18:39 +0000
> > From: maartenbuis@yahoo.co.uk
> > Subject: Re: st: a loop error of -foreach-
> > To: statalist@hsphsun2.harvard.edu
> >
> > --- On Fri, 17/9/10, Grace Jessie wrote:
> > > I encountered a loop problem.
> > > The commands I edited are as follwows.
> > >
> > > foreach j in a b c d {
> > > foreach i in e f g {
> > > if `j'==b {
> > > count
> > > }
> > > else {
> > > su
> > > }
> > > }
> > > }
> > >
> > > Sometimes the error was showed "b ambiguous
> > > abbreviation",sometimes the error was "type mismatch".
> > > What is wrong?
> > > In my mind, -foreach lname in- can be followed by
> > > any_list.
> >
> > the problem is not with -foreach- but with the commands
> > inside your loop. Apperently the elements your are looping
> > over are not always unique variable names and sometimes
> > they are string variable where numeric variables where
> > expected or vice versa.
> >
> > Hope this helps,
> > Maarten
> >
> > --------------------------
> > Maarten L. Buis
> > Institut fuer Soziologie
> > Universitaet Tuebingen
> > Wilhelmstrasse 36
> > 72074 Tuebingen
> > Germany
> >
> > http://www.maartenbuis.nl
> > --------------------------
> >
> >
> >
> >
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