--- Maarten buis <[email protected]> wrote:
> No need to wait for StataCorp. One of the nice things about Stata is
> that you can do it yourself, like in the example below.
Here is a small update that should be a bit safer (it now uses some
tricks from http://www.stata.com/support/faqs/data/distinct.html )
*--------- begin mkbalanced.ado------------------
*! version 1.0.1 MLB 19Jan2008
program define mkbalanced, sortpreserve
syntax, GENerate(name)
confirm new var `generate'
capture xtset
if _rc == 459 {
di as err ///
"panel variable not set, use -xtset varname ...-"
}
local panelvar "`r(panelvar)'"
local timevar "`r(timevar)'"
tempvar touse nvals
gen byte `touse' = !missing(`timevar')
qui levelsof `timevar'
local t : word count `r(levels)'
bys `panelvar' `timevar' `touse' : ///
gen long `nvals' = _n == 1 if `touse'
bys `panelvar' `touse' : ///
replace `nvals' = sum(`nvals') if `touse'
bys `panelvar' `touse' : ///
gen byte `generate' = `nvals'[_N]== `t'
end
*--------- end mkbalanced.ado------------------
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
___________________________________________________________
Support the World Aids Awareness campaign this month with Yahoo! For Good http://uk.promotions.yahoo.com/forgood/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
