Re: st: Show Command Output in Foreach Loop ...

[Michael Stewart <michaelstewartresearch@gmail.com>]

Thanks a lot Sergiy.The answer was helpful .
Mike

On Fri, Jul 5, 2013 at 12:49 AM, Sergiy Radyakin <serjradyakin@gmail.com> wrote:
> Mike,
> you will find the answer to your first question here:
> http://www.stata.com/help.cgi?quotes
>
> For the second question the answer is that `cmd' is just the value of
> macro cmd. You can substitute the letters cmd with xyz or abc, you
> will get the same result. It does not have to be a regression.
> Furthermore it does not have to be displayed with -display-. This is
> just to say "I have a command that Stata is about to execute, is there
> anything else useful I want to do with it before or after Stata
> actually executes it?"
>
> Hope this helps, Sergiy
>
> On Thu, Jul 4, 2013 at 10:54 PM, Michael Stewart
> <michaelstewartresearch@gmail.com> wrote:
>> Hi,
>>
>> I am trying to understand the  code written by Sergiy.I have couple of
>> questions .I hope someone can answer them.Thank you in advance for
>> your time and consideration.Sorry, they might be basic questions for
>> the  expert programmers in this forum.
>>
>>
>> sysuse auto,clear
>> levelsof rep78, local(levs)
>> foreach lev in `levs' {
>>   local cmd `"regress price weight if rep78==`lev'"'
>>   display `"`cmd'"'
>>   `cmd'
>> }
>>
>> Question-1:
>>
>> Does it matter if we substitute  local cmd regress price weight if
>> rep78==`lev'     for    local cmd `"regress price weight if
>> rep78==`lev'"'
>>
>> I am getting the same result  or am I missing something
>>
>> Likewise I am getting same result with display `"`cmd'"' OR  display
>> "`cmd'".Is there any difference between the two or am I missing
>> something
>>
>>
>> Question-2:
>>
>> How does the command   `cmd'   work.It seems to be display the regression output
>>
>> Thanks a lot for your time.
>>
>> --
>> Yours Sincerely,
>> Mike.
>>
>> On Mon, Jul 1, 2013 at 2:07 AM, Sergiy Radyakin <serjradyakin@gmail.com> wrote:
>>> Matthew, it has been an observation in this list that you get a much
>>> higher chances of getting responses and faster responses if you
>>> supplement your question with a starter like this:
>>>
>>> sysuse auto
>>> levelsof rep78, local(levs)
>>> foreach lev in `levs' {
>>>   regress price weight if rep78==`lev'
>>> }
>>> ** eof
>>>
>>> Then all one has to do is a little edit to the code to get the answer you seek:
>>>
>>> sysuse auto
>>> levelsof rep78, local(levs)
>>> foreach lev in `levs' {
>>>   local cmd `"regress price weight if rep78==`lev'"'
>>>   display `"`cmd'"'
>>>   `cmd'
>>> }
>>> ** eof
>>>
>>> Best, Sergiy
>>>
>>>
>>>
>>> On Sun, Jun 30, 2013 at 10:31 PM, Matthew McKay
>>> <matthew.mckay@anu.edu.au> wrote:
>>>> Statalist,
>>>>
>>>> I have seen a few earlier remarks in 2007 about showing commands during foreach loops.
>>>> Option 1:
>>>> Set trace on
>>>> Set tracedepth 1
>>>> This doesn't work that well for me as it clumps the commands together and then the regression output together.
>>>>
>>>> Since then, is there a better way to show the issued command during a foreach loop?
>>>> Why can't it just simply show the executed lines and the regression as if the code was running outside of a foreach loop in one long sequence?
>>>>
>>>> I have multiple datasets that I would like to run the same extensive set of analysis on.
>>>> The smcl log file output is not very reader friendly without the command breaks printed in between each regression.
>>>>
>>>> Cheers,
>>>> Matthew
>>>> Phd Student
>>>> ACDE, Crawford School
>>>>
>>>>
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-- 
Thank you ,
Yours Sincerely,
Mike.
*
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