Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: -foreach- loop to fit regression at each level of a variable
From
Milena Przheska <[email protected]>
To
[email protected]
Subject
Re: st: -foreach- loop to fit regression at each level of a variable
Date
Tue, 19 Nov 2013 14:38:09 +0100
With all due respect, I doubt that everyone that posts a question has
read all 11000 pages of documentation.
I felt overwhelmed, so I asked for help.
And by the way, even with all the syntax correct, I don't get any
estimates, which was the essence of my question.
On Tue, Nov 19, 2013 at 2:27 PM, Nick Cox <[email protected]> wrote:
> My point was that I had already explained why -foreach- with -of- did
> not work without a key word indicating list type. Also, the specific
> FAQ referred to does explain at length how to approach exactly your
> problem.
>
> The Statalist FAQ does underline an expectation that people do try to
> read the documentation.
>
> Nick
> [email protected]
>
>
> On 19 November 2013 13:10, Milena Przheska
> <[email protected]> wrote:
>> Nick,
>>
>> Judging by your tone I realize I have wasted your patience, but my
>> question was whether it is even possible to do what I wanted, because
>> I just wanted to know whether I am on the right path, or trying
>> something that Stata cannot accept.
>>
>> In any case, thank you for your reply.
>>
>> On Tue, Nov 19, 2013 at 1:57 PM, Nick Cox <[email protected]> wrote:
>>> Please read the whole of my reply and the FAQ referred to.
>>>
>>> Nick
>>> [email protected]
>>>
>>>
>>> On 19 November 2013 12:47, Milena Przheska
>>> <[email protected]> wrote:
>>>> Yes, I fixed that with the following:
>>>>
>>>>
>>>> levelsof sample, local(sample_levels)
>>>>
>>>> but the -foreach- still does not work
>>>>
>>>>
>>>> On Tue, Nov 19, 2013 at 1:43 PM, Nick Cox <[email protected]> wrote:
>>>>> Also, there is no legal syntax
>>>>>
>>>>> -egen local-
>>>>> Nick
>>>>> [email protected]
>>>>>
>>>>>
>>>>> On 19 November 2013 12:42, Nick Cox <[email protected]> wrote:
>>>>>> Just looking at the help for a few seconds establishes that
>>>>>>
>>>>>> 1. There is no -levelsof()- function for -egen-.
>>>>>>
>>>>>> 2. -foreach ... of- requires a key word specifying a list type to follow.
>>>>>>
>>>>>> Also you should learn in type in Stata
>>>>>>
>>>>>> . search foreach
>>>>>>
>>>>>> to find resources. In this case,
>>>>>>
>>>>>> http://www.stata.com/support/faqs/data-management/try-all-values-with-foreach/
>>>>>>
>>>>>> is most focused on your problem.
>>>>>>
>>>>>> Nick
>>>>>> [email protected]
>>>>>>
>>>>>>
>>>>>> On 19 November 2013 12:34, Milena Przheska
>>>>>> <[email protected]> wrote:
>>>>>>
>>>>>>> I am trying to fit the same logistic regression model using different
>>>>>>> samples from a data set and I am wondering if it is even possible to
>>>>>>> use a -foreach- loop to estimate regression models for each sample
>>>>>>> (indicated by a variable).
>>>>>>>
>>>>>>> I use the variable 'sample' to indicate the sample, but instead of
>>>>>>> writing the command over and over for each sample, I tried to do this
>>>>>>> with a -foreach- loop, something like this:
>>>>>>>
>>>>>>> egen local sample_level = levelsof(sample)
>>>>>>>
>>>>>>> foreach n of sample_level {
>>>>>>> logistic outcome var1 var2 var3 if sample_level==`n', vce(cluster id)
>>>>>>> }
>>>>>>>
>>>>>>> As always, I would appreciate your help.
>>> *
>>> * For searches and help try:
>>> * http://www.stata.com/help.cgi?search
>>> * http://www.stata.com/support/faqs/resources/statalist-faq/
>>> * http://www.ats.ucla.edu/stat/stata/
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/faqs/resources/statalist-faq/
>> * http://www.ats.ucla.edu/stat/stata/
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/