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st: RE: RE: Saving different parts of a dataset using foreach


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: Saving different parts of a dataset using foreach
Date   Tue, 31 Aug 2010 10:29:21 +0100

In other words, only certain keywords may appear after -of-. The relevant syntax is 

foreach <lname> of <listtype> <list> {
                commands referring to `lname'
}

-- and the only allowed -listtype-s are 

local global  varlist  newlist  numlist   

Nick 
n.j.cox@durham.ac.uk 

Martin Weiss

Look at the -foreach- syntax diagram, or read up on it in NJC`s
http://www.stata-journal.com/sjpdf.html?articlenum=pr0005. Even better:
-forvalues-

***********
forv year = 2002/2008{
di `year'
}
***********

Matthew Krauchunas

I am working with panel data and I need to separate the data by year,
run some commands, and then append it.  The BY command will not work
with this particular command so that is not an option.  I have tried
the following commands and it keeps telling me invalid syntax.  Does
anyone see an error here or have a suggestion(s)?

use "G:\Merged_Joined_Appended
files\final_oshpd_oscar_merge_w_dp_first_set_variables"
sort year
cd g:\Years
preserve
  foreach i of year 2002/2008 {
          keep if year == `i'
          * run my commands here *
          save year_`i'
          restore, preserve
  }

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