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 <jvad...@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 > <dtuck...@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]] ______________________________________________ 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.
