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Re: st: Value label gaps

From   Jakob Petersen <[email protected]>
To   [email protected]
Subject   Re: st: Value label gaps
Date   Mon, 16 Jul 2012 13:59:10 +0100

On 16/07/2012 13:20, Maarten Buis wrote:
Here is one idea, which makes heavy use of extended macro functions.
These are documented in -help extended_fcn-. (Though I always forget
and instead type -help macro- or -help local- and click on the link to
extended macro functions.)

*----------------------- begin example ---------------------
sysuse auto, clear
// introduce value gap error in foreign
la def origin 1 "",modify

ds, has(vallab)
local vars `r(varlist)'
foreach var of local vars {
     local problems ""
     local labname : value label `var'
     levelsof `var', local(levs)
     foreach i of local levs {
         if  `"`: label `labname' `i', strict'"' == "" {
             local problems  "`problems' `i'"
     local problems : list retokenize problems
     if "`problems'" != "" {
         local s    = cond(`: word count `problems'' > 1, ///
                           "s", "")
         local have = cond(`: word count `problems'' > 1, ///
                           "have", "has")
         di as txt "The following value`s' of variable " _c
         di as result "`var'" _c
         di as txt " `have' no value label:"
         di as result "`problems'"
*------------------------ end example ----------------------

Hope this helps,

Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen

Thanks a lot - much faster.  Jakob
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