Re: st: -foreach- loop to fit regression at each level of a variable

[Milena Przheska <milena.przheska@cosmicdevelopment.com>]

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 <njcoxstata@gmail.com> wrote:
> Also, there is no legal syntax
>
> -egen local-
> Nick
> njcoxstata@gmail.com
>
>
> On 19 November 2013 12:42, Nick Cox <njcoxstata@gmail.com> 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
>> njcoxstata@gmail.com
>>
>>
>> On 19 November 2013 12:34, Milena Przheska
>> <milena.przheska@cosmicdevelopment.com> 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.
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