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Re: st: AW: RE: Number of a subset of variables in local
From
Antoine Terracol <[email protected]>
To
[email protected]
Subject
Re: st: AW: RE: Number of a subset of variables in local
Date
Thu, 19 Aug 2010 15:54:45 +0200
Right, had forgotten about that (though I've been beaten more than once...)
So I guess the correct 2-liner would be:
unab myvars : name*
local mycount: list sizeof myvars
Antoine
On 19/08/2010 15:45, Martin Weiss wrote:
<>
Also, Sven, you want to be extra careful when applying both solutions to a
large project, i.e. many members of the -varlist- "name*":
*************
clear*
forv i=1/100{
gen name`i'=.
}
unab myvars1: name*
local mycount1=wordcount("`myvars1'")
qui d name*, varlist
*local myvars2 `r(varlist)'
local myvars2 =r(varlist)
local mycount2: list sizeof myvars2
ma di
di in r `mycount1' ", " `mycount2'
*************
If you comment in the line
- local myvars2 `r(varlist)'-
and -consequently- comment out the line below it, you will get the correct
result "100" for -local- "mycount2". See NJC`s
http://www.stata-journal.com/article.html?article=pr0045 for explanations...
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Trelle Sven
Gesendet: Donnerstag, 19. August 2010 15:27
An: [email protected]
Betreff: st: RE: Number of a subset of variables in local
Thanks to Martin and Antoine, that was quick.
Both solutions work fine (Antoine's is two lines though).
Thread closed. Sven
Two line solution:
unab myvars : name*
local mycount=wordcount("`myvars'")
Three line solution:
d name*, varlist
local myvars=r(varlist)
local mycount: list sizeof myvars
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