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Re: st: display commands generated within foreach-loop


From   "Svend Juul" <SJ@SOCI.AU.DK>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: display commands generated within foreach-loop
Date   Tue, 20 Nov 2007 11:28:10 +0100

 
Thorsten wrote:
 
I'm sure my problem has a real simple solution, but 
I am unable to find it - how can I actually *see* 
the commands generated by a foreach-loop.
 
Let's say I have the following:
 
preserve
sysuse auto, clear
foreach x in "mpg" "price" {
ttest `x', by(foreign)
}
restore

In this case, I would like to see
 
ttest mpg, by(foreign)
... output ...
 
ttest price, by(foreign)
... output ...
 
in my logfile, but I don't. All I see is the output of the T-test.
 
---------------------------------------------------------
 
- and Maarten gave useful advice.
 
However, I think that Thorstens problem illustrates a
design problem with the -ttest- output; the names
of the variables involved ought to be included in the
output.
 
At least some other commands do that, e.g.:
 
     foreach x of varlist mpg price {
        tab1 `x'
     }
 
-tab1- does it right. But -tabulate- is not satisfactory,
it only displays the sometimes ambiguous variable label, not 
the unambiguous variable name.
 
     foreach x of varlist mpg price {
        tabulate `x'
     }
 
This was for the wishlist: Some af Stata's basics are still
unfinished.
 
Svend

________________________________________________________ 
 
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6 
DK-8000 Aarhus C,  Denmark 
Phone, work:  +45 8942 6090 
Phone, home:  +45 8693 7796 
Fax:          +45 8613 1580 
E-mail:       sj@soci.au.dk 
_________________________________________________________ 

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