Let me explain what I am planning on doing; some background is probably
necessary and in hindsight the first email doesn't accurately describe what
I am looking to do. I'm trying to run a conditional logit model, but I want
to have a different strata depending on the value of another variable
if sample==1 I want my strata to be stratida
if sample==2 I want my strata to be stratidb
if sample==3 I want my strata to be stratidc

stratida/stratidb/stratidc are NOT variables already in the dataset.
they represent a string combination of three already present numerical
variables (year, byregn2, group) and differ for when the variable sample is
==1,2 or 3. They are different variables for labeling purposes. What I am
looking to do is replicate these in one variable--make one variable that is
the string combination of year, byregn2, and group and then use it as my
strata.

On Wed, May 29, 2013 at 1:53 PM, Adams, Jean <jvadams@usgs.gov> wrote:

> You are limiting yourself to getting help from only those people that
> understand the STATA language.  You may improve your chances for a helpful
> response if you tell us in English what the STATA commands mean.
>
> Jean
>
>
> On Wed, May 29, 2013 at 10:37 AM, Daniel Tucker <dtucker9@u.rochester.edu>wrote:
>
>> R list members,
>>
>> I am trying to replicate a command script in STATA and find
>> equivalency in R to the following Stata command:
>>
>> egen stratida = concat(year byregn2 group) if sample==1
>> egen stratidb = concat(year byregn2 group) if sample==2
>> egen stratidc = concat(year byregn2 group) if sample==3
>>
>> Not sure if I should just try to make a for loop and use the paste
>> operator or if there is somewhere else I should be looking.
>>
>>
>> Thanks,
>>
>> Daniel
>>
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>

	[[alternative HTML version deleted]]

