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Re: st: Loop question


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Loop question
Date   Sat, 9 Feb 2013 15:51:36 +0000

Note also that using equals signs when not needed can bite you:

SJ-8-4  pr0045  . . . . . . . . Stata tip 70: Beware the evaluating equal sign
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        Q4/08   SJ 8(4):586--587                                 (no commands)
        tip explaining the pitfall of losing content in a macro
        because of limits on the length of string expressions

Nick

On Sat, Feb 9, 2013 at 3:35 PM, Cory Smith <corybsmith@gmail.com> wrote:

> It's a stylistic choice. Personally, I think it's cleaner to declare
> all special lists upfront, though I realize there are aspects of
> Stata's structure which discourage this.

On Sat, Feb 9, 2013 at 4:34 AM, Nick Cox <njcoxstata@gmail.com> wrote:

>> Could also be
>>
>> foreach e in _icw _imp1w _imp2w _mw {
>>      reg post`e' i.appliance pre`e'
>> }
>>
>> The local macro does no harm, but more direct code will work too.

On Sat, Feb 9, 2013 at 6:01 AM, Cory Smith <corybsmith@gmail.com> wrote:

>>> do something like:
>>>
>>> local ends = "_icw _imp1w _imp2w _imw"
>>>
>>> foreach e of local ends {
>>>     reg post`e' i.appliance pre`e'
>>> }

On Sat, Feb 9, 2013 at 12:54 AM, Nikolaos Pandis <npandis@yahoo.com> wrote:

>>>> I am trying to do the following in Stata 12.1:
>>>> ************************************************************
>>>>
>>>>  foreach myvarpre of varlist pre_icw pre_imp1w pre_ipm2w pre_imw {
>>>>      foreach myvarpost of varlist post_icw post_ipm1w post_ipm2w post_imw {
>>>>          reg `myvarpost' i.appliance `myvarpre', noheader
>>>>      }
>>>>  }
>>>> *******************************************************************
>>>> How can I restrict in the regression and adjust only for the corresponding pre_* variable and not for all the variables in my list?
>>>>
>>>> I would like only to get only the following:
>>>>
>>>> reg post_icw i.appliance pre_icw
>>>> reg post_imp1w i.appliance pre_imp1w
>>>> reg post_imp2w i.appliance pre_imp2w
>>>> reg post_imw i.appliance pre_imw
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